Patents by Inventor Yoshikuni Itoh

Yoshikuni Itoh 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: 9512075
    Abstract: The present invention provides compounds belonging to 3-acyloxyindole compounds or 3-acyl-4-hydroxycoumarin compounds, a tautomer or geometric isomer thereof, or a salt thereof and methods for producing the same, which compounds are useful as antibacterial agent and as therapeutic drugs against infectious diseases.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: December 6, 2016
    Assignees: OKAYAMA UNIVERSITY, MICROBIAL CHEMISTRY RESEARCH FOUNDATION, KINKI UNIVERSITY
    Inventors: Teruhiko Ishikawa, Tatsuya Kitaoka, Shyota Katayama, Yoshikuni Itoh, Ryutaro Utsumi, Masayuki Igarashi
  • Publication number: 20150291523
    Abstract: The present invention provides compounds belonging to 3-acyloxyindole compounds or 3-acyl-4-hydroxycoumarin compounds, a tautomer or geometric isomer thereof, or a salt thereof and methods for producing the same, which compounds are useful as antibacterial agent and as therapeutic drugs against infectious diseases.
    Type: Application
    Filed: October 17, 2013
    Publication date: October 15, 2015
    Inventors: Teruhiko Ishikawa, Tatsuya Kitaoka, Shyota Katayama, Yoshikuni Itoh, Ryutaro Utsumi, Masayuki Igarashi
  • Patent number: 6671509
    Abstract: A mobile station (mobile communication unit) receives system software from a base station via an antenna and a transmitter/receiver, and stores the received system software in a memory. A digital signal processor in the mobile station then performs communication processing according to the system software stored in the memory. By transmitting various system software from the base station, the single mobile station can easily be adapted to different communication principles. The base station also receives system software from a center via a public exchange network, and stores the received system software in a memory. A digital signal processor in the base station then performs communication processing according to the system software stored in the memory.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: December 30, 2003
    Assignee: Kokusai Electric Co., Ltd.
    Inventors: Masaki Tanaka, Kenzo Urabe, Seigo Miyoshi, Yoshikuni Itoh, Hideto Yamaguchi
  • Patent number: 6069162
    Abstract: The object amide compounds of the present invention are novel and can be represented by the following general formula (I): whereinR.sup.1 is indolyl or benzofuranyl;R.sup.2 is hydrogen, lower alkylthio(lower)alkyl or a group of the formula: ##STR1## in which R.sup.5 is hydrogen, lower alkoxy or halogen; R.sup.3 is hydrogen, quinolyl or phenyl which may have a suitable substituent selected from the group consisting of lower alkyl, lower alkoxy, lower alkylthio and halogen;R.sup.4 is hydrogen or optionally esterified carboxy; andX is S or NR.sup.6in which R.sup.6 is hydrogen, lower alkyl or a group of the formula: ##STR2## in which R.sup.7 is lower alkyl or lower alkoxy.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: May 30, 2000
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Yoshikuni Itoh, Takumi Yatabe, deceased, Takayuki Inoue, Hitoshi Hamashima
  • Patent number: 5932737
    Abstract: New peptide compounds of the formula:1.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: August 3, 1999
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Yoshikuni Itoh, Toshiro Iwamoto, Takumi Yatabe, Hitoshi Hamashima, Takayuki Inoue, Seiji Hashimoto, Teruo Oku
  • Patent number: 5296487
    Abstract: A compound of the formula: ##STR1## in which R.sup.1 and R.sup.2 are each hydrogen, halogen, nitro, amino, protected amino, hydroxyamino, lower alkyl, hydroxy, protected hydroxy, sulfamoyl, carboxy, protected carboxy, mercapto, optionally substituted heterocyclic-carbonyl, optionally substituted heterocyclic-(lower)alkyl, lower alkylthio, hydroxy(lower)alkyl or protected hydroxy(lower)alkyl,R.sup.3 is aryl which may have suitable substituent(s), andA is lower alkylene,or pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: March 22, 1994
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Norihiko Shimazaki, Hitoshi Yamazaki, Takumi Yatabe, Hirokazu Tanaka, Yoshikuni Itoh, Masashi Hashimoto
  • Patent number: 5292862
    Abstract: The method includes the steps of feeding a polymer to an extruder where the polymer is melted, metering the molten polymer from the extruder to a tubular pyrolysis reactor through metering means connected to the extruder, and pyrolytically decomposing the polymer in the tubular pyrolysis reactor in the presence of a higher fatty acid, and/or a hydrochloric acid acceptor.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: March 8, 1994
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Eigo Miura, Takashi Yamanaka, Ryoji Ohori, Akio Ohdaira, Kenichi Nishiwaki, Yoshikuni Itoh, Yoshinori Morita, Hajime Inagaki
  • Patent number: 5264438
    Abstract: Compounds of the formula: ##STR1## are described wherein R.sup.1, R.sup.2, R.sup.3 and A are described in the claims. These compounds show significant dopamine receptor agonist activity.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: November 23, 1993
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Norihiko Shimazaki, Hitoshi Yamazaki, Takumi Yatabe, Hirokazu Tanaka, Yoshikuni Itoh, Masashi Hashimoto
  • Patent number: 5047428
    Abstract: An expectorant comprising a hydroxyalkylcysteine derivative of the following formula (I) is disclosed. ##STR1## wherein n represents an integer of 1 to 4. The expectorant is stabile, has little side effects and toxicity, and exhibits an excellent expectorant effect.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: September 10, 1991
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Yoshikuni Itoh, Hiroyuki Mizuno, Chikako Kiyohara, Susumu Sato, Tatsuhiko Katori
  • Patent number: 4906665
    Abstract: Novel hydroxyalkylcysteine derivatives of the following formula (I) and an expectorant comprising the same are disclosed. ##STR1## wherein n represents an integer of 5 to 24. The expectorant is stabile, has little side effects and toxicity, and exhibits an excellent expectorant effect.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: March 6, 1990
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Yoshikuni Itoh, Hiroyuki Mizuno, Chikako Kiyohara, Susumu Sato, Tatsuhiko Katori