Patents by Inventor Akiharu Kajiwara

Akiharu Kajiwara 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).

  • Polyprenyl compound and pharmaceutical use
    Patent number: 4782151
    Abstract: A novel polyprenyl compound is identified with the formula and useful for a pharmaceutical drag. ##STR1## wherein X represents a group of the formula: ##STR2## (wherein R.sup.1 and R.sup.2, which may be the same or differnt, represent each a hydrogen atom, a lower alkyl group, a hydroxyalkyl group, or a lower alkenyl group); a group of the formula: ##STR3## (wherein A including the nitrogen atom shown represents a ring containing nitrogen and oxygen atoms); or a group of the formula: ##STR4## (wherein R.sup.3 represents a hydrogen atom or a lower alkyl group, and R.sup.4 represents a lower alkyl group); Y represents a group of the formula: ##STR5## or a group of the formula: ##STR6## (wherein R.sup.5 represents a hydrogen atom or a lower alkyl group), and n represents an integer of from 2 to 5.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: November 1, 1988
    Assignee: Eisai Co., Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Kouji Nakamoto, Akiharu Kajiwara, Manabu Murakami, Kiyoshi Oketani, Hideaki Fujisaki
  • Polyprenyl compound, process for the production thereof and drug containing the same
    Patent number: 4762829
    Abstract: A novel polyprenyl compound such as a polyprenyl carboxylic acid amide is disclosed. It has antithrombic and antiplatelet aggregation activity.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: August 9, 1988
    Assignee: Eisai Co., Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Kouji Nakamoto, Akiharu Kajiwara, Tohru Fujimori, Koukichi Harada, Shinichi Kitamura
  • Polyprenyl compound, process for the production thereof and drug containing the same
    Patent number: 4742058
    Abstract: A novel polyprenyl compound such as a polyprenyl carboxylic acid amide is disclosed. It has antithrombic and antiplatelet aggregation activity.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: May 3, 1988
    Assignee: Eisai Co., Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Kouji Nakamoto, Akiharu Kajiwara, Tohru Fujimori, Koukichi Harada, Shinichi Kitamura
  • .beta.,.gamma.-dihydropolyprenyl alcohol derivatives and pharmaceutical composition containing a polyprenyl compound
    Patent number: 4624966
    Abstract: A .beta.,.gamma.-dihydropolyprenyl alcohol derivative having the formula: ##STR1## wherein n is an integer of 5 to 7 and R is hydrogen, a lower alkyl group or an aliphatic or aromatic acyl group, is new and useful as a phylactic agent against human and animal infectious diseases. Other disclosed polyprenyl compounds are also useful as such agents.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: November 25, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Masaichi Yamamoto, Seiichi Araki, Hiroshi Yamamoto, Isao Yamatsu, Takeshi Suzuki, Akiharu Kajiwara, Yoshikazu Suzuki, Haruyoshi Arai
  • Therapeutic and preventive agent containing dolichol
    Patent number: 4613593
    Abstract: Dolichol or phosphate thereof is useful as a therapeutically treating and preventive agent, in particular, for hyperuricuria, hyperlipemia, diabetes and hepatic diseases.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: September 23, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Kouji Nakamoto, Akiharu Kajiwara, Kouichi Katayama, Hajime Tsunoda, Manabu Murakami, Hideki Ono, Kouji Yamada
  • Therapeutic and preventive agent containing dolichol
    Patent number: 4603126
    Abstract: Dolichol or phosphate thereof is useful as a therapeutically treating and preventive agent, in particular, for hyperuricuria, hyperlipemia, diabetes and hepatic diseases.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: July 29, 1986
    Assignee: Eisai Co. Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Kouji Nakamoto, Akiharu Kajiwara, Kouichi Katayama, Hajime Tsunoda, Manabu Murakami, Hideki Ono, Kouji Yamada
  • Therapeutic and preventive agent containing dolichol
    Patent number: 4599328
    Abstract: Dolichol or phosphate thereof is useful as a therapeutically treating and preventive agent, in particular, for hyperuricuria, hyperlipemia, diabetes and hepatic diseases.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: July 8, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Kouji Nakamoto, Akiharu Kajiwara, Kouichi Katayama, Hajime Tsunoda, Manabu Murakami, Hideki Ono, Kouji Yamada
  • Polyprenylcarboxylic acid amides
    Patent number: 4522759
    Abstract: There is disclosed a polyprenylcarboxylic acid amide of the formula: ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group, R.sup.2 represents a hydrogen atom or a group of the formula: --COOR.sup.4 in which R.sup.4 represents a lower alkyl group, R.sup.3 represents a hydrogen atom or an OH group and n represents an integer of 1 to 6.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: June 11, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Isao Yamatsu, Takeshi Suzuki, Shinya Abe, Akiharu Kajiwara, Kiichiro Ota