Patents by Inventor Ichiro Yamawaki

Ichiro Yamawaki 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).

  • Bicyclolactam compounds, use thereof and intermediates for preparing thereof
    Patent number: 6500819
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: December 31, 2002
    Assignee: Taiho Pharmaceutical Company Limited
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Bicycloloactam compounds, use thereof and intermediates for preparing thereof
    Publication number: 20020099048
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects 1
    Type: Application
    Filed: January 10, 2002
    Publication date: July 25, 2002
    Applicant: Taiho Pharmaceutical Company Limited
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Bicycloloactam compounds, use thereof and intermediates for preparing thereof
    Patent number: 6355668
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: March 12, 2002
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Bicycloloactam compounds, use thereof and intermediates for preparing thereof
    Patent number: 6303623
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: October 16, 2001
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Bicyclolactam compounds, use thereof and intermediates for preparing thereof
    Patent number: 6159987
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects ##STR1## A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent ##STR2##
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: December 12, 2000
    Assignee: Taiho Pharmaceuticals, Co.
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Piezoelectric transformer inverter
    Patent number: 6134133
    Abstract: A piezoelectric transformer inverter includes an inverter unit and a step-down chopper unit. The inverter unit includes a ceramic piezoelectric transformer whose secondary terminal is to be connected to a fluorescent tube, a drive unit which is connected to a primary terminal of the ceramic piezoelectric transformer, and an inverter control circuit for controlling luminance of the fluorescent tube to a desired value. The step-down chopper unit includes a switching device which is disposed on the side where the voltage of the inverter unit is input, a free wheeling device connected between the switching device and a reference potential, and a PWM feedback control circuit for providing a feedback control to maintain an average voltage of the rectangular-wave voltage of the switching device constant.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: October 17, 2000
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Noma, Ichiro Yamawaki, Yasuyuki Morishima
  • Bicyclolactam compounds, use thereof and intermediates for preparing thereof
    Patent number: 6004975
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects ##STR1## A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent ##STR2## .
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: December 21, 1999
    Assignee: Taiho Pharmaceutical Company Limited
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Substance 4181-2 and its derivatives having anti-leukemia activity
    Patent number: 4866069
    Abstract: Disclosed are a compound of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a hydrogen atom, an alkyl group or an acyl group, process for the production thereof and use thereof. The compounds have an antitumor activity, and those wherein both of R.sub.1 and R.sub.2 represent a hydrogen atom or an acyl group are novel compounds.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: September 12, 1989
    Assignee: Taiho Pharmaceutical Company, Limited
    Inventors: Qi Chang-qing, Tian Jie, Teruyoshi Marunaka, Yuji Yamada, Ichiro Yamawaki, Toshio Ohtani, Yoshinori Minami, Hitoshi Saito
  • Substance 4181-2
    Patent number: 4814449
    Abstract: Disclosed are a compound of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a hydrogen atom, an alkyl group or an acyl group, process for the production thereof and use thereof. The compounds have an antitumor activity, and those wherein both of R.sub.1 and R.sub.2 represent a hydrogen atom or an acyl group are novel compounds.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: March 21, 1989
    Assignee: Taiho Pharmaceutical Company, Limited
    Inventors: Qi Chang-qing, Tian Jie, Teruyoshi Marunaka, Yuji Yamada, Ichiro Yamawaki, Toshio Ohtani, Yoshinori Minami, Hitoshi Saito
  • Derivative of piperazine having anti-allergic and anti-inflammatory action
    Patent number: 4696929
    Abstract: A piperazine derivative represented by the formula (I) below ##STR1## wherein R.sup.1 is lower alkyl or phenyl, R.sup.2 is hydrogen or lower alkyl, n is an integer of 2 to 10, is useful as an effective component of anti-inflammatory agent or antiallergic agent.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: September 29, 1987
    Assignee: Taiho Pharmaceutical Company, Limited
    Inventors: Ichiro Yamawaki, Kazuo Ogawa, Naohiko Ono, Takaji Honna, Sekio Nagayama, Mitsugi Yasumoto
  • Amide compounds
    Patent number: 4670583
    Abstract: This invention provides an amide compound represented by the formula ##STR1## wherein R.sub.1 is vinyl, 2-(methylsulfinyl)ethyl, 2-(methylsulfonyl)ethyl, 2-(2-acetylamino-2-carboxyethylthio)ethyl or 2-[2-(4-amino-4-carboxybutyrylamino)-2-(carboxymethylcarbamoyl)ethylthio]e thyl and R.sub.2 is hydrogen or lower alkyl, process for the preparation thereof, and antiallergic compositions cotaining the amide compound.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: June 2, 1987
    Assignee: Taiho Pharmaceutical Company, Limited
    Inventors: Akihide Koda, Mikio Hori, Mitsugi Yasumoto, Naosuke Matsuura, Ichiro Yamawaki, Yukio Tada
  • Sulfonium compounds
    Patent number: 4581372
    Abstract: Sulfonium compounds represented by the formula ##STR1## having immunostimulant activity and useful as the active components of drugs and agricultural chemicals.
    Type: Grant
    Filed: October 14, 1983
    Date of Patent: April 8, 1986
    Assignee: Taiho Pharmaceutical Company Limited
    Inventors: Akihide Koda, Mikio Hori, Mitsugi Yasumoto, Ichiro Yamawaki, Yuji Yamada, Katsuo Takikawa
  • Sulfonium compounds, processes for preparing the compounds and pharmacological composiitons containing the same
    Patent number: 4556737
    Abstract: This invention provides novel sulfonium compounds, processes for the preparation of the sulfonium compounds, and pharmacological composition containing the sulfonium compound. The compounds of this invention are useful for treating allergy.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: December 3, 1985
    Assignee: Taiho Pharmaceutical Company Limited
    Inventors: Akihide Koda, Mikio Hori, Naosuke Matsuura, Mitsugi Yasumoto, Ichiro Yamawaki, Shuichi Ueda, Yukio Tada
  • Sulfonium compounds
    Patent number: 4340543
    Abstract: Sulfonium compounds represented by the formula ##STR1## have anticancer activity, immunostimulant activity and the like, and useful as the active components of drugs and agricultural chemicals.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: July 20, 1982
    Assignee: Taiho Pharmaceutical Company Limited
    Inventors: Akihide Koda, Mikio Hori, Mitsugi Yasumoto, Ichiro Yamawaki, Yuji Yamada, Katsuo Takikawa
  • Preparation of 5-fluoropyrimidin-4-one derivatives
    Patent number: 4092313
    Abstract: A 5-fluoropyrimidin-4-one derivative represented by the formula ##STR1## wherein R is straight-chain or branched-chain alkyl having 4 to 18 carbon atoms, straight-chain or branched-chain alkenyl having 2 to 18 carbon atoms, alkylene oxido having 3 to 10 carbon atoms, aryl or aralkyl;Processes for preparing the derivative;An anti-tumor composition containing the derivative as an effective component and an excipient.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: May 30, 1978
    Assignee: Taisho Pharmaceutical Company Limited
    Inventors: Mitugi Yasumoto, Junichi Yamashita, Ichiro Yamawaki, Norio Unemi, Kenji Kitazato, Sadao Hashimoto, Setsuro Fujii
  • 5-Fluoropyrimidin-4-one compositions
    Patent number: 4080455
    Abstract: A 5-fluoropyrimidin-4-one derivative represented by the formula ##STR1## wherein R is straight-chain or branched-chain alkyl having 4 to 18 carbon atoms, straight-chain or branched-chain alkenyl having 2 to 18 carbon atoms, alkylene oxido having 3 to 10 carbon atoms, aryl or aralkyl;Processes for preparing the derivative;An anti-tumor composition containing the derivative as an effective component and an excipient.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: March 21, 1978
    Assignee: Taisho Pharmaceutical Company Limited
    Inventors: Mitugi Yasumoto, Junichi Yamashita, Ichiro Yamawaki, Norio Unemi, Kenji Kitazato, Sadao Hashimoto, Setsuro Fujii