Patents by Inventor Noritoshi Koyama

Noritoshi Koyama 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).

  • Methods employing stable preparation containing azelastine hydrochloride
    Patent number: 6117864
    Abstract: Azelastine hydrochloride is combined certain fatty acids. The stability and absorbability of the composition is enhanced.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: September 12, 2000
    Assignee: ASTA Medica Aktiengesellschaft
    Inventors: Yutaka Morita, Noritoshi Koyama, Shigemitsu Ohsawa
  • Peroral preparation of acid-unstable compound
    Patent number: 5035899
    Abstract: A peroral preparation of an acid-unstable compound comprises (1) a core containing the acid-unstable compound, (2) a first layer, coated on the core, comprising a hardly water-soluble, film-forming material and fine particles of a hardly water-soluble substance, suspended in the material, and (3) a second layer, coated on the first layer, of enteric film. The acid-unstable compound is a benzimidazole compound.
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: July 30, 1991
    Assignee: Eisai Co., Ltd.
    Inventors: Yasuharu Saeki, Noritoshi Koyama, Sumio Watanabe, Shigeru Aoki
  • Aqueous solution containing lipid-soluble pharmaceutical substance
    Patent number: 4840970
    Abstract: Disclosed herein is an aqueous solution containing a lipid-soluble active vitamin substance and/or ubiquinone. The solution has a pH of 5.5-8 and additionally contains a hydrogenated lecithin and neutral amino acid. It is stable and free from side effects, and is rather easy to prepare.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: June 20, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroyuki Ohasi, Toru Takami, Noritoshi Koyama, Yoshio Kogure, Katsumi Ida, Kazumi Iijima, Tomohiro Kobori
  • Polyprenyl alcohol-containing injections
    Patent number: 4839389
    Abstract: Polyprenyl alcohol-containing injections comprising polyprenyl alcohols shown by the formula: ##STR1## wherein n is an integer of 5 to 7, and lecithin as essential ingredients. The subject injections can enhance utilization of the polyprenyl alcohols contained therein in vivo, thereby effectively preventing or treating infectious diseases in humans or animals.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: June 13, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Noritoshi Koyama, Takayuki Ikeuchi, Seiichi Araki, Kyosuke Kitoh, Katsumi Ida
  • Aqueous solution containing ubidecarenone
    Patent number: 4483873
    Abstract: An aqueous solution containing ubidecarenone which is characterized by the fact that a hydrogenated lecithin is incorporated. This solution is stable and free side effects.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: November 20, 1984
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroyuki Ohashi, Toru Takami, Noritoshi Koyama, Yoshio Kogure, Katsumi Ida