Patents by Inventor Nobuaki Yamakoshi

Nobuaki Yamakoshi 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: 4914106
    Abstract: A compound represented by the following formula ##STR1## wherein A represents a hydrogen atom or a lower alkanoyl group, Z represents an oxygen atom or the group ##STR2## in which R represents a hydrogen atom or a lower alkyl group, and X represents a halogen atom, the compound being useful for controlling androgen-dependent diseases, particularly for preventing abortion or for contraception.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: April 3, 1990
    Assignee: Teikoku Hormone Mfg. Co., Ltd.
    Inventors: Kenyu Shibata, Nobuaki Yamakoshi, Naoyuki Koizumi, Shigehiro Takegawa, Eiichiro Shimazawa, Mamoru Mieda
  • Patent number: 4785103
    Abstract: A compound represented by the following formula ##STR1## wherein A represents a hydrogen atom or a lower alkanoyl group, Z represents an oxygen atom or the group ##STR2## in which R represents a hydrogen atom or a lower alkyl group, and X represents a halogen atom, the compound being useful for controlling androgen-dependent diseases, particularly for preventing prostatic hypertrophy.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: November 15, 1988
    Assignee: Teikoku Hormone Mfg. Co., Ltd.
    Inventors: Kenyu Shibata, Nobuaki Yamakoshi, Naoyuki Koizumi, Shigehiro Takegawa, Eiichiro Shimazawa, Mamoru Mieda
  • Patent number: 4293557
    Abstract: Phenoxypropylamine derivatives of the general formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl or ethyl group, R.sub.2 and R.sub.3, independently from each other, represent a lower alkyl group, or together form a linear alkylene group having 4 to 7 carbon atoms which may be optionally substituted by a hydroxyl or hydroxymethyl group, and R.sub.4 represents a hydrogen atom or a group of the formula --R.sub.5 --Z in which R.sub.5 represents a lower alkylene group, and Z represents a hydrogen atom or an amino, mono- or di-(lower alkyl)-amino, hydrdoxy lower alkylamino, lower alkanoylamino, hydroxyl, lower alkoxy, lower alkanoyloxy, phenoxy, halophenoxy, benzoyloxy or halobenzoyloxy group, andthe salts thereof; to a process for production thereof; and to their medicinal use, particularly to antiulcer agents comprising these phenoxypropylamine derivatives or their salts.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: October 6, 1981
    Assignee: Teikoku Hormone Mfg. Co., Ltd.
    Inventors: Kenyu Shibata, Toshihisa Itaya, Nobuaki Yamakoshi, Shigeru Kurata, Naoyuki Koizumi, Masaaki Tarutani, Hideki Sakuma, Kunihiro Konishi