Patents by Inventor Takayuki Ohwaki

Takayuki Ohwaki 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: 8263123
    Abstract: The present invention provides a quickly disintegrating tablet which has quick disintegrability and solubility in an oral cavity, and does not have uncomfortable tastes such as bitterness, has a small variation of a tablet physical property even in storage under a humidifying condition, and has substantially no change in a medicine content in the tablet and tablet appearance and which is superior in stability; and a manufacturing method of the tablet. That is, it provides: a quickly disintegrating tablet which is prepared by blending a medicine with a saccharide and polyvinyl alcohol, which has small variations of tablet weight, tablet hardness, tablet diameter and tablet thickness, and which is superior in medicine stability in the tablet; and a manufacturing method of the tablet.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: September 11, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yutaka Morita, Masanobu Yasui, Takayuki Ohwaki, Yuki Tsushima
  • Patent number: 7727548
    Abstract: The present invention provides a quickly disintegrating tablet which has quick disintegrability and solubility in an oral cavity, and does not have uncomfortable tastes such as bitterness, has a small variation of a tablet physical property even in storage under a humidifying condition, and has substantially no change in a medicine content in the tablet and tablet appearance and which is superior in stability; and a manufacturing method of the tablet. That is, it provides: a quickly disintegrating tablet which is prepared by blending a medicine with a saccharide and polyvinyl alcohol, which has small variations of tablet weight, tablet hardness, tablet diameter and tablet thickness, and which is superior in medicine stability in the tablet; and a manufacturing method of the tablet.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: June 1, 2010
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yutaka Morita, Masanobu Yasui, Takayuki Ohwaki, Yuki Tsushima
  • Publication number: 20100015221
    Abstract: The present invention provides an orally rapid disintegrating tablet preparation that contains a high dose of a fat-soluble active ingredient, that exhibits excellent disintegration characteristics in the oral cavity, and that can be produced by a dry tabletting method. The present invention also provides a method of producing an orally rapid disintegrating tablet preparation. The present invention discloses an orally rapid disintegrating tablet preparation that is obtained by tabletting a uniform mixture prepared by mixing saccharide alcohol, crystalline cellulose, and a lubricant with a granule that has been produced by the adsorption of a fat-soluble active ingredient on a porous material.
    Type: Application
    Filed: December 20, 2006
    Publication date: January 21, 2010
    Applicant: Eisai R&D Management Co.Ltd.
    Inventors: Norishige Takami, Shinsuke Nagira, Yasushi Okada, Noriko Okada, Takayuki Ohwaki, Reiko Nishijima
  • Publication number: 20100009003
    Abstract: The present invention provides a pharmaceutical preparation to be dispersed before administration which has an adequate viscosity and a suitable flowability even when dispersed in a small amount of water and can be easily administered through an NG tube is provided. Specifically, the pharmaceutical preparation to be dispersed before administration contains active granules containing a pharmaceutically active substance having an average particle diameter of 5 mm or less and a thickening agent, and can be administered through an NG tube by dispersing in water before administration.
    Type: Application
    Filed: September 17, 2009
    Publication date: January 14, 2010
    Inventors: Koji UKAI, Yasuyuki Asai, Yoshiteru Kato, Takayuki Ohwaki, Shigeru Aoki, Yasuhiro Zaima, Takehiro Yamaguchi
  • Publication number: 20080014262
    Abstract: The present invention provides a quickly disintegrating tablet which has quick disintegrability and solubility in an oral cavity, and does not have uncomfortable tastes such as bitterness, has a small variation of a tablet physical property even in storage under a humidifying condition, and has substantially no change in a medicine content in the tablet and tablet appearance and which is superior in stability; and a manufacturing method of the tablet. That is, it provides: a quickly disintegrating tablet which is prepared by blending a medicine with a saccharide and polyvinyl alcohol, which has small variations of tablet weight, tablet hardness, tablet diameter and tablet thickness, and which is superior in medicine stability in the tablet; and a manufacturing method of the tablet.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 17, 2008
    Inventors: Yutaka MORITA, Masanobu Yasui, Takayuki Ohwaki, Yuki Tsushima
  • Publication number: 20040202715
    Abstract: The present invention provides an intraoral quickly disintegrating tablet containing a phosphodiesterase inhibitor having an effect of improving the erectile dysfunction and a method for manufacturing the tablet. The present invention also provides an intraoral quickly disintegrating tablet containing a slightly soluble pharmaceutical agent having an improved solubility and a method for manufacturing the tablet. That is, it is an intraoral quickly disintegrating tablet containing a cyclic GMP phosphodiesterase inhibitor and a saccharide, and a method for manufacturing the tablet.
    Type: Application
    Filed: April 29, 2004
    Publication date: October 14, 2004
    Applicant: EISAI CO., LTD.
    Inventors: Hisao Furitsu, Akira Kato, Takayuki Ohwaki, Masanobu Yasui
  • Patent number: 6743443
    Abstract: The present invention provides an intraoral quickly disintegrating tablet containing a phosphodiesterase inhibitor having an effect of improving the erectile dysfunction and a method for manufacturing the tablet. The present invention also provides an intraoral quickly disintegrating tablet containing a slightly soluble pharmaceutical agent having an improved solubility and a method for manufacturing the tablet. That is, it is an intraoral quickly disintegrating tablet containing a cyclic GMP phosphodiesterase inhibitor and a saccharide, and a method for manufacturing the tablet.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: June 1, 2004
    Assignee: Eisai Co., Ltd.
    Inventors: Hisao Furitsu, Akira Kato, Takayuki Ohwaki, Masanobu Yasui
  • Publication number: 20030086967
    Abstract: The present invention provides a quickly disintegrating tablet which has quick disintegrability and solubility in an oral cavity, and does not have uncomfortable tastes such as bitterness, has a small variation of a tablet physical property even in storage under a humidifying condition, and has substantially no change in a medicine content in the tablet and tablet appearance and which is superior in stability; and a manufacturing method of the tablet. That is, it provides: a quickly disintegrating tablet which is prepared by blending a medicine with a saccharide and polyvinyl alcohol, which has small variations of tablet weight, tablet hardness, tablet diameter and tablet thickness, and which is superior in medicine stability in the tablet; and a manufacturing method of the tablet.
    Type: Application
    Filed: August 13, 2002
    Publication date: May 8, 2003
    Inventors: Yutaka Morita, Masanobu Yasui, Takayuki Ohwaki, Yuki Tsushima
  • Patent number: 6227836
    Abstract: A method and an apparatus for manufacturing tablets of moist powder which is produced by adding an additive agent such as an excipient or a binder to medical ingredients, further adding a solvent such as water, ethanol or the like, and kneading the mixture.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 8, 2001
    Assignee: Sankyo Seisakusho Co & Eisai Co., Ltd.
    Inventors: Heizaburo Kato, Yuki Tsushima, Takayuki Ohwaki, Masaharu Nakajima, Yutaka Morita
  • Patent number: 6074586
    Abstract: A method and an apparatus for manufacturing tablets of moist powder which is produced by adding an additive agent such as an excipient or a binder to medical ingredients, further adding a solvent such as water, ethanol or the like, and kneading the mixture.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: June 13, 2000
    Assignee: Sankyo Seisakusho & Eisai Co., Ltd.
    Inventors: Heizaburo Kato, Yuki Tsushima, Takayuki Ohwaki, Masaharu Nakajima, Yutaka Morita
  • Patent number: 5672364
    Abstract: A method and an apparatus for manufacturing tablets of moist powder which is produced by adding an additive agent such as an excipient or a binder to medical ingredients, further adding a solvent such as water, ethanol or the like, and kneading the mixture.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: September 30, 1997
    Assignee: Sankyo Seisakusho Co. & Eisai Co., Ltd.
    Inventors: Heizaburo Kato, Yuki Tsushima, Takayuki Ohwaki, Masaharu Nakajima, Yutaka Morita
  • Patent number: 5603880
    Abstract: It is an object of the present invention to realize a method and an apparatus for efficiently mass-producing tablets of high mechanical strength, accuracy and quality which are so excellent in solubility and collapsibility that they can be easily taken by persons of advanced ages and infants. By using a turn table and endless belt means to which a number of dies are connected, a part of which turn table contacts with the endless belt means, the turn table and the endless belt means being adapted to relatively move with respect to each other, receptacles are formed by pressing plastic polymer film in mold cavities of the dies. Moist powder supplied from a hopper into filling holes of the turn table is pressurizingly filled in the receptacles by means of a filling and pressurizing device in the region where the turn table is laid above the endless belt means.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: February 18, 1997
    Assignee: Sankyo Seisakusho Co.
    Inventors: Heizaburo Kato, Yuki Tsushima, Takayuki Ohwaki, Masaharu Nakajima, Yutaka Morita
  • Patent number: 4827062
    Abstract: A composition containing ubidecarenone, a glycerol mono-fatty acid ester and/or a propylene glycol mono-fatty acid ester, and a liquid oil. Oral administration of the composition provides a promoted absorption of ubidecarenone which is used for improving a coronary function.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: May 2, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Yasuharu Saeki, Takeshi Watanabe, Takayuki Ohwaki, Masahiro Kawahara, Yasuo Miyake
  • Patent number: 4598070
    Abstract: An inclusion compound composed of tripamide and cyclodextrin markedly improves the solubility of tripamide which is effective for treatment of essential hypertension.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: July 1, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Takayuki Ohwaki, Shigeru Sakashita, Masahiro Kawahara, Aishin Shinoda, Yasuo Miyake
  • Patent number: 4532881
    Abstract: This invention provides a process for sealing a body and a cap of a capsule which comprises successively dipping a gelatin hard capsule containing drugs one by one in a mixed solvent of water and ethanol whose volume ratio to water is 50-55%, thereafter taking said capsule out of this solvent and drying each capsule separately.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: August 6, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Sakashita, Takeshi Nakagawa, Takayuki Ohwaki, Yasuo Miyake
  • Patent number: 4510168
    Abstract: This invention provides a process for sealing a body and a cap of a capsule which comprises successively dipping a gelatin hard capsule containing drugs one by one in a mixed solvent of water and ethanol whose volume ratio to water is 50-55%, thereafter taking said capsule out of this solvent and drying each capsule separately.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: April 9, 1985
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Sakashita, Takeshi Nakagawa, Takayuki Ohwaki, Yasuo Miyake