Patents by Inventor Akihiro Nakanishi

Akihiro Nakanishi 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: 8883002
    Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: November 11, 2014
    Assignees: Daicel Chemical Industries, Ltd., Merck Patent GmbH
    Inventors: Tatsushi Murakami, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
  • Patent number: 8883001
    Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: November 11, 2014
    Assignees: Daicel Chemical Industries, Ltd., Merck Patent GmbH
    Inventors: Tatsushi Murakami, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
  • Publication number: 20110094955
    Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.
    Type: Application
    Filed: December 27, 2010
    Publication date: April 28, 2011
    Inventors: Tatsushi MURAKAMI, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
  • Publication number: 20110089095
    Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.
    Type: Application
    Filed: December 27, 2010
    Publication date: April 21, 2011
    Inventors: Tatsushi MURAKAMI, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
  • Publication number: 20070227957
    Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.
    Type: Application
    Filed: May 29, 2007
    Publication date: October 4, 2007
    Inventors: Tatsushi Murakami, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
  • Publication number: 20050130497
    Abstract: On a printed circuit board, there are mounted a pair of first leads, a first semiconductor device mounted on each of the first leads, a pair of second leads, and a second semiconductor device mounted on each of the second leads. A semiconductor device connecting terminal portion of each of the first leads extends to an outer side from the first semiconductor device, and one end of an intermediate slope portion of each of the first leads is bent to an inner side, whereby a substrate connecting terminal portion is structured. Accordingly, since an entire length of each of the first leads is elongated, a stress is absorbed dispersedly, and a tape carrier package is made compact.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 16, 2005
    Inventors: Yoshihiro Asakura, Kenya Kamijo, Akihiro Nakanishi, Toshihiko Watanabe, Toru Aihara
  • Patent number: 6242565
    Abstract: A method for preparing a peptide derivative of formula (I) or a salt thereof: which method comprises the steps of removing two MBzl groups from a compound of formula (II) or a salt thereof: wherein MBzl represents a 4-methoxybenzyl group which serves as a protective group for a thiol group, and R1 and R2 represent hydrogen or a protective group for Trp or Arg respectively; and subsequently oxidizing in an aqueous medium having a pH from 4 to 6 to form an intramolecular disulphide bond; intermediates useful for preparing the compounds of formula (I) and preparation of the intermediates.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: June 5, 2001
    Assignee: TT Pharmaceuticals, Inc.
    Inventors: Satoshi Kishida, Akihiro Nakanishi, Hitoshi Kimura