Patents by Inventor Yoshiro Otsu

Yoshiro Otsu 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).

  • Antibacterial and antifungal activity method, therapeutic method of infectious diseases and preserving method of cosmetics
    Patent number: 5696169
    Abstract: The present invention provides a method of controlling bacteria or fungi which comprises contacting therewith a zinc compound and at least one member selected from among hinokitiol and salts thereof; a method of treating infectious diseases caused by bacteria or fungi which comprises administering a zinc compound and at least one member selected from among hinokitiol and salts thereof; and a method of preserving cosmetics which comprises adding thereto a zinc compound and at least one member selected from among hinokitiol and salts thereof.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: December 9, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yoshiro Otsu, Yaeno Arima, Yoriko Nakai
  • Remedy for dermatopathy and metallothionein inducer
    Patent number: 5582817
    Abstract: Zinc salts, zinc complexes or salts thereof of a compound selected from the group consisting of nicotinamides, picolinamides, 3,4-dihydroxybenzoic acids, amino acids, peptides, hinokitiols and pyridine carboxylic acids represented by formula (1): ##STR1## possess a metallothionein inducing effect, effect of suppressing the production of sunburn cells, and therefore, useful as cosmetics and as drugs which are for ameliorating sunburn, preventing sunburn, ameliorating skin diseases, relieving irradiation disorders, and the like.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: December 10, 1996
    Assignees: Otsuka Pharmaceutical Co., Ltd., Japan Immunoresearch Laboratories Co., Ltd.
    Inventors: Yoshiro Otsu, Yaeno Arima, Katsuyuki Nakajima, Masakazu Adachi, Tsutomu Muramatsu, Katsumi Hanada