Patents by Inventor Tatsuo Horaguchi

Tatsuo Horaguchi 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).

  • AIR PURGE DEVICE
    Publication number: 20240125527
    Abstract: Provided is a air purge device that can effectively discharge air.
    Type: Application
    Filed: February 18, 2022
    Publication date: April 18, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Nobuki OKA, Ryo KAMITO, Yoshiaki ITO, Taichi YOSHII, Tatsuo ISHIGURO, Yoshie TOGANO, Norihisa HORAGUCHI, Masahiko NAGAI, Naoya MIYOSHI
  • 4(3H)-quinazolinone derivatives and pharmaceutical compositions
    Patent number: 5008266
    Abstract: 4(3H)-Quinazolinone derivative of formula (I) are provided. ##STR1## wherein R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, an aryl group, a substituted aryl group, or an aralkyl group; R.sub.2 is a C.sub.1 -C.sub.6 alkylamino group, a phenyl group, a substituted phenyl group, or a 5- or 6-membered heterocyclic group containing one or more N, O or S as a hetero atom or atoms, said heterocyclic group optionally being substituted or fused with a benzene ring; n is 1 or 2; or R.sub.2 represents a geranyl group or a dipyridylmethyl group together with the group --(CH.sub.2).sub.n --; and X is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or a halogen atom, and pharmaceutically acceptable acid addition salts thereof. They are useful as antiucler agents.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: April 16, 1991
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Toshihiro Takahashi, Tatsuo Horaguchi, Koichi Nakamaru, Yoshikuni Suzuki
  • 4(3H)-quinazolinone derivatives and pharmaceutical compositions
    Patent number: 4861780
    Abstract: 4(3H)-Quinazolinone derivatives of formula (I) are provided. ##STR1## wherein R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, an aryl group, a substituted aryl group, or an aralkyl group; R.sub.2 is a C.sub.1 -C.sub.6 alkylamino group, a phenyl group, a substituted phenyl group, or a 5- or 6-membered heterocyclic group containing one or more N, O or S as a hetero atom or atoms, said heterocyclic group optionally being substituted or fused with a benzene ring; n is 1 or 2; or R.sub.2 represents a geranyl group or a dipyridylmethyl group together with the group --(CH.sub.2).sub.n --; and X is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or a halogen atom, and pharmaceutically acceptable acid addition salts thereof.They are useful as antiulcer agents.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: August 29, 1989
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Toshihiro Takahashi, Tatsuo Horaguchi, Koichi Nakamaru, Yoshikuni Suzuki
  • 2-Alkylsulfinyl-4(3H)-quinazolinone derivatives and pharmaceutical compositions
    Patent number: 4833144
    Abstract: 2-Alkylsulfinyl-4(3H)-quinazolinone derivatives of formula (I) are provided. ##STR1## wherein R.sub.1 is a C.sub.1 -C.sub.6 alkyl group, an aryl group, a substituted aryl group or an aralkyl group, R.sub.2 is a phenyl group, a substituted phenyl group or a 5- or 6-membered heterocyclic group containing one or more N, O or S as a hetero atom or atoms, said heterocyclic group optionally being substituted or fused with a benzene ring, n is 1 or 2 and X is hydrogen, a C.sub.1 -C.sub.6 alkyl group or a halogen atom, and pharmaceutically acceptable acid addition salts thereof. They are useful as antiulcer agents.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: May 23, 1989
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Toshihiro Takahashi, Tatsuo Horaguchi, Koichi Nakamaru, Yoshikuni Suzuki
  • 4-Thioquinazoline derivatives as antiulcer agents
    Patent number: 4829069
    Abstract: 4-Thioquinazoline derivatives of formula (I) are provided. ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.6 alkylamino group, a phenyl group, a substituted phenyl group or a 5- or 6-membered heterocyclic group containing one or two N, O or S as a hetero atom or atoms, said heterocyclic group optionally being substituted or fused with a benzene ring; n is 1 or 2; or R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, and pharmaceutically acceptable acid addition salts thereof. They are useful as antiulcer agents.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: May 9, 1989
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Toshihiro Takahashi, Koichi Nakamaru, Yoshikuni Suzuki, Tatsuo Horaguchi