Patents by Inventor Kozo Sawada

Kozo Sawada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7317009
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: January 8, 2008
    Assignee: Astellas Pharma Inc.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Patent number: 7153854
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: December 26, 2006
    Assignee: Astellas Pharma Inc.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Publication number: 20060270678
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases.
    Type: Application
    Filed: August 8, 2006
    Publication date: November 30, 2006
    Applicant: Astellas Pharma Inc.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Publication number: 20060229236
    Abstract: A cyclic tetrapeptide compound of the formula (I): wherein R1 is hydrogen; R2 is lower alkyl, aryl, optionally substituted ar(lower)alkyl, heterocyclic(lower)alkyl, cyclo(lower)alkyl(lower)alkyl, lower alkylcarbamoyl(lower)alkyl or arylcarbamoyl(lower)alkyl; R3 and R4 are each independently hydrogen, lower alkyl, optionally substituted ar(lower)alkyl, optionally substituted heterocyclic(lower)alkyl or cyclo(lower)alkyl(lower)alkyl, or R3 and R4 are linked together to form lower alkylene or condensed ring, or one of R3 and R4 is linked to the adjacent nitrogen atom to form a ring; R5 is lower alkylene or lower alkenylene, Y is [wherein RY1 is hydrogen, halogen or optionally protected hydroxy, RY2 is hydrogen, halogen, lower alkyl or phenyl, and RY3 is hydrogen or lower alkyl]; R8 is hydrogen or lower alkyl; and n is an integer of 1 or 2, or a salt thereof.
    Type: Application
    Filed: December 27, 2002
    Publication date: October 12, 2006
    Applicant: FUJISAWA PHARMACEUTICAL Co. LTD.
    Inventors: Shigeki Satoh, Yasuharu Urano, Kazuhiko Osoda, Mitsuru Hosaka, Kozo Sawada, Takayuki Inoue, Hiroaki Mori, Shoji Takagaki, Takao Fujimura, Hideaki Matsuoka, Katsuhiko Yoshizawa
  • Publication number: 20050075342
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases.
    Type: Application
    Filed: December 30, 2003
    Publication date: April 7, 2005
    Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Patent number: 6582351
    Abstract: A compound (Ia): wherein the variables are defined in the specification, its prodrug or a pharmaceutically acceptable salt thereof useful in the treatment of angina, hypertension etc.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: June 24, 2003
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kozo Sawada, Takayuki Inoue, Yuki Sawada, Tsuyoshi Mizutani
  • Publication number: 20020193614
    Abstract: Novel anthranilic acid derivatives having an inhibiting activity of cGMP-PDE are represented by the formula I where A is a lower alkylene group: 1
    Type: Application
    Filed: January 18, 2002
    Publication date: December 19, 2002
    Applicant: Fujisawa Pharmaceutical Co. Ltd.
    Inventors: Teruo Oku, Noriko Oku, Chikako Oku, Tomohito Oku, Kozo Sawada, Akio Kuroda, Takayuki Inoue, Natsuko Kayakiri, Yuki Sawada, Tsuyoshi Mizutani
  • Patent number: 6384080
    Abstract: Compounds of formula (I) where R1 is hydrogen; R2 is nitro, cyano or halo(lower)alkyl; R3 is phenyl substituted with one or more substituents selected from halogen, cyano and lower alkoxy; A is a lower alkylene group; R4 is a group CR6R7R8 wherein R6 and R7 form, together with the carbon atom to which they are attached a cycloalkyl group optionally substituted with hydroxy, lower alkoxy or a lower alkanoylamino; and R8 is hydrogen; its prodrug and a salt thereof.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: May 7, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Teruo Oku, Kozo Sawada, Akio Kuroda, Takayuki Inoue, Natsuko Kayakiri, Yuki Sawada, Tsuyoshi Mizutani
  • Patent number: 6069156
    Abstract: Compounds of the formula (I): ##STR1## and their pharmaceutically acceptable compositions are useful in inhibiting the activity of cyclic guanosine 3',5'-monophosphate phosphodiesterase.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: May 30, 2000
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Teruo Oku, Kozo Sawada, Akio Kuroda, Kazuhiko Ohne, Atsushi Nomoto, Naomi Hosogai, Yoshimitsu Nakajima, Akira Nagashima, Keizo Sogabe, Kouichi Tamura, Masakazu Kobayashi
  • Patent number: 5780633
    Abstract: A new process for preparing a compound of the formula: ##STR1##
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: July 14, 1998
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Satoshi Okada, Kozo Sawada, Akio Kuroda, Shinya Watanabe, Hirokazu Tanaka
  • Patent number: 5530019
    Abstract: A compound of the formula (I): ##STR1## wherein R.sup.1 is an optionally protected carboxy(lower)alkyl, R.sup.2 is a hydrogen, an optionally substituted aryl or a carboxy,X is a bond, --0--, --NH-- or a cycloalkylene, andY is an alkylene which may be interrupted by an oxygen atom, an alkenylene or an alkadienylene,or a pharmaceutically acceptable salt thereof. The compound of the present invention is useful as a testosterone 5.alpha.-reductase inhibitor and effective against testosterone 5.alpha.-reductase-mediated diseases such as prostatism, prostatic hypertrophy, prostatic cancer, alopecia, hirsutism (e.g. female hirsutism), androgenic alopecia (or male-pattern baldness), acne (e.g. acne vulgaris, pimple), and other hyperandrogenisms.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: June 25, 1996
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Satoshi Okada, Kozo Sawada, Akio Kuroda, Shinya Watanabe, Hirokazu Tanaka
  • Patent number: 5367661
    Abstract: A technique, specifically apparatus and an accompanying method, for use in, e.g., a "host" operating system (610), for properly updating a dynamically alterable channel program that controls an input/output (I/O) device so as to emulate a "guest" computer system, that employs dynamic address translation (DAT) in an I/O channel sub-system (150), on a "host" computer system (10) that does not. This technique performs this updating in a manner that significantly increases channel throughput so as to substantially reduce a performance degradation that would otherwise result from a lack of channel DAT on the host system. Specifically, our technique relies on program controlled interrupt (PCI) chaining coupled with use of "just-in-time" translation of each new virtual channel program segment generated by a guest operating system (620) and corresponding updating of channel program (415) then executing on the host computer system.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: November 22, 1994
    Assignee: International Business Machines Corporation
    Inventors: Roger E. Hough, Kazuo Iimura, Kenya Ishimoto, Masao Nishimoto, Akio Saitoh, Kozo Sawada, Fumiaki Abe, Goroh Sasaki, Stephen J. Schmandt
  • Patent number: 5334716
    Abstract: This invention relates to heterocyclic derivatives useful for treating or preventing testosteron 5.alpha.-reductase mediated diseases such as alopecia, ache, prostatism and the like, which can be represented by the following formula: ##STR1## to a process for their production, to a pharmaceutical composition containing the same and to uses thereof.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: August 2, 1994
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Satoshi Okada, Kozo Sawada, Akio Kuroda, Shinya Watanabe, Hirokazu Tanaka
  • Patent number: 5312829
    Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is carboxy or pharmaceutically acceptable salts and esters thereof;R.sup.2 is hydrogen, lower alkyl or halogen;R.sup.3 is phenyl, naphthyl, phenyl or naphthyl each substituted by from one to three C.sub.1-6 alkyl groups, mono-, di- or triphenyl (C.sub.1-6)alkyl; or substituted mono-, di- or triphenyl (C.sub.1-6) alkyl;A is lower alkylene which may be substituted by oxo or lower alkenylene,Q is carbonyl or lower alkylene,X is ##STR2## in which R.sup.4 is hydrogen or C.sub.1-6 alkyl, andR.sup.5 is hydrogen, C.sub.1-6 alkyl or Y--Z--R.sup.3,Y is a bond or lower alkylene,Z is lower alkylene ##STR3## in which R.sup.6 is hydrogen, (C.sub.1 -C.sub.6) alkyl, mono-, di- or triphenyl(C.sub.1-10) alkyl, C.sub.1-6 alkyl or lower alkoxycarbonyl substituted mono-, di- or triphenyl(C.sub.1-6)alkyl or pharmaceutically acceptable carboxylic acid acyl, and pharmaceutically acceptable salts thereof. The compound is useful as a testosterone 5.alpha.-reductase inhibitor.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: May 17, 1994
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Satoshi Okada, Kozo Sawada, Natsuko Kayakiri, Yuki Saitoh, Hirokazu Tanaka, Masashi Hashimoto
  • Patent number: 5283251
    Abstract: Indole derivatives of the following formula: ##STR1## wherein R.sup.1 is carboxy(lower)alkyl or protected carboxy(lower)alkyl,R.sup.2 is hydrogen, lower alkyl or halogen,R.sup.3 and R.sup.4 are each hydrogen or lower alkyl,R.sup.5 is ar(lower)alkyl which may have suitable substituent(s), andA is carbonyl, sulfonyl or lower alkylene, or a pharmaceutically acceptable salt thereof, which are useful as a testosterone 5.alpha.-reductase inhibitor.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: February 1, 1994
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Satoshi Okada, Kozo Sawada, Natsuko Kayakiri, Yuki Saitoh, Hirokazu Tanaka, Masashi Hashimoto
  • Patent number: 5212320
    Abstract: Indole derivatives of the formula ##STR1## and pharmaceutical compositions thereof. They are useful for treating or preventing testosterone 5-alpha-reductase-mediated diseases, such as alopecia, acnes and prostatism.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: May 18, 1993
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Satoshi Okada, Kozo Sawada, Natsuko Kayakiri, Yuki Saitoh, Hirokazu Tanaka, Masashi Hashimoto
  • Patent number: 5037866
    Abstract: An air-drying aqueous coating composition for electrodeposition comprising[A] a water-solubilized product or a water-dispersed product obtained by reacting (A-1) an epoxy resin and (A-2) a (semi)drying oil fatty acid-modified vinyl polymer having an acid value of 10 to 200 in such proportions that the solids weight ratio of the component (A-1) to the component (A-2) is from 90/10 to 5/95, and[B] an amphoteric organic solvent having affinity for component [A].
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: August 6, 1991
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Tetsuo Aihara, Yasuharu Nakayama, Shigeki Matsubara, Kozo Sawada
  • Patent number: 4963585
    Abstract: The invention relates to a compound of antimicrobial activity of the formula ##STR1## wherein R.sup.1 is hydrogen or lower alkanoyl,R.sup.2 is hydrogen or ##STR2## in which R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are hydrogen or lower alkanoyl,R.sup.3 is carboxy or a protected carboxy, and pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: October 16, 1990
    Assignee: Fujisawa Pharmaceutical Company, Ltd.
    Inventors: Masanori Okamoto, Eisaku Tsujii, Tsutomu Kaizu, Hiroshi Hatanaka, Masakuni Okuhara, Kozo Sawada, Hirokazu Tanaka
  • Patent number: 4883800
    Abstract: The invention relates to compounds having aldose reductase-inhibitory activity of the formula: ##STR1## in which R.sup.1 and R.sup.2 are each hydrogen, halogen, lower alkoxy or halo(lower)alkyl,R.sup.3 is phenyl(lower)alkyl which may have one or more substituent(s) selected from the group consisting of halogen, lower alkoxy, halo(lower)alkyl and lower alkyl,R.sup.4 is carboxy or protected carboxy,A is sulfur atom,Y is carbonyl, thiocarbonyl or sulfonyl andZ is lower alkylene,and pharmaceutically acceptable salts thereof, useful in treating diabetic complications.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: November 28, 1989
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masashi Hashimoto, Teruo Oku, Yoshikuni Ito, Takayuki Namiki, Kozo Sawada, Chiyoshi Kasahara, Yukihisa Baba
  • Patent number: 4734419
    Abstract: The invention relates to compounds of the formula: ##STR1## in which R.sup.1 and R.sup.2 are each hydrogen, halogen, lower alkoxy or halo(lower)alkyl,R.sup.3 is dihalophenyl, naphthyl(lower)alkyl, phenyl(lower)alkyl substituted by one or two substituent(s) selected from the group consisting of halogen, lower alkoxy, halo(lower)alkyl and lower alkyl, or thienyl(lower)alkyl,R.sup.4 is carboxy or protected carboxy,Y is carbonyl, thiocarbonyl or sulfonyl andZ is lower alkylene, and pharmaceutically acceptable salts thereof, useful in the treatment of diabetic complications.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: March 29, 1988
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masashi Hashimoto, Teruo Oku, Yoshikuni Ito, Takayuki Namiki, Kozo Sawada, Chiyoshi Kasahara, Yukihisa Baba