Patents by Inventor Shun-ichi Tanaka

Shun-ichi Tanaka 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).

  • Publication number: 20240018216
    Abstract: The current application describes various compositions and methods for the production of FN3-based binding proteins with improved stability properties. Aspects of the disclosure relate to polypeptides comprising a variant fibronectin type III (FN3) domain from Sulfolobus tokodaii or Pyrococcus horikoshii comprising one or more amino acid substitutions or insertions in a loop region of FN3, in a non-loop region of FN3, or in both.
    Type: Application
    Filed: May 4, 2023
    Publication date: January 18, 2024
    Applicant: The University of Chicago
    Inventors: Shohei KOIDE, Shun-Ichi TANAKA, Akiko KOIDE
  • Patent number: 11680091
    Abstract: The current application describes various compositions and methods for the production of FN3-based binding proteins with improved stability properties. Aspects of the disclosure relate to polypeptides comprising a variant fibronectin type III (FN3) domain from Sulfolobus tokodaii or Pyrococcus horikoshii comprising one or more amino acid substitutions or insertions in a loop region of FN3, in a non-loop region of FN3, or in both.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: June 20, 2023
    Assignee: The University of Chicago
    Inventors: Shohei Koide, Shun-Ichi Tanaka, Akiko Koide
  • Patent number: 11459400
    Abstract: Aspects of the disclosure relate to compositions of enzyme-binding polypeptides (EBPs) that modify the substrate specificity of an enzyme and a method for identifying an EBP that modifies substrate specificity of an enzyme binding at least one substrate, the method comprising: contacting the enzyme with a polypeptide library comprising a plurality of EBPs that bind different epitopes of the enzyme; identifying EBPs that bind to the enzyme to form an EBP-enzyme complex; assaying for the activity level and substrate specificity of the EBP-enzyme complex; and identifying EBPs that modify the substrate specificity of the enzyme by identifying EBPs that, when in an EBP-enzyme complex, have a different substrate specificity than un-complexed EBP; wherein the catalytic rate constant of the EBP-enzyme complex is ?50% of the un-complexed enzyme for at least one substrate and/or wherein the EBP-enzyme complex retains binding to a substrate.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 4, 2022
    Assignee: The University of Chicago
    Inventors: Shohei Koide, Shun-Ichi Tanaka, Akiko Koide
  • Publication number: 20210079063
    Abstract: The current application describes various compositions and methods for the production of FN3-based binding proteins with improved stability properties. Aspects of the disclosure relate to polypeptides comprising a variant fibronectin type III (FN3) domain from Sulfolobus tokodaii or Pyrococcus horikoshii comprising one or more amino acid substitutions or insertions in a loop region of FN3, in a non-loop region of FN3, or in both.
    Type: Application
    Filed: February 21, 2019
    Publication date: March 18, 2021
    Inventors: Shohei KOIDE, Shun-Ichi TANAKA, Akiko KOIDE
  • Patent number: 10870840
    Abstract: The present invention addresses a problem of providing a lipase derived from a microorganism that is specific for short-chain to medium-chain fatty acids. A modified lipase is obtained by making a substitution in the amino acid sequence of a Candida cylindracea derived lipase, wherein the substitution is (1) a substitution of asparagine for an amino acid corresponding to the amino acid at position 428 in the amino acid sequence set forth in SEQ ID NO: 1; or (2) a substitution of phenylalanine, methionine, or isoleucine for an amino acid corresponding to the amino acid at position 429 in the amino acid sequence set forth in SEQ ID NO: 1.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: December 22, 2020
    Assignee: AMANO ENZYME INC.
    Inventors: Yuki Ishigaki, Satoru Ishihara, Shun-ichi Tanaka
  • Patent number: 10526423
    Abstract: The present invention addresses the problem of providing an eggshell membrane solubilization method that is capable of solving the problems associated with carrying out treatment using acids and alkalis, or problems associated with the processing methods of the conventional art that use proteases; in other words, an eggshell membrane solubilization method that is capable of solving at least one of the following problems: (1) the need for pretreatment such as pulverization, sonication or boiling; (2) the need for prolonged treatment; and (3) a low decomposition rate (approximately 20%). Eggshell membranes are efficiently solubilized by using a protease in combination with a reducing agent.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: January 7, 2020
    Assignee: AMANO ENZYME INC.
    Inventor: Shun-ichi Tanaka
  • Publication number: 20190345465
    Abstract: The present invention addresses a problem of providing a lipase derived from a microorganism that is specific for short-chain to medium-chain fatty acids. A modified lipase is obtained by making a substitution in the amino acid sequence of a Candida cylindracea derived lipase, wherein the substitution is (1) a substitution of asparagine for an amino acid corresponding to the amino acid at position 428 in the amino acid sequence set forth in SEQ ID NO: 1; or (2) a substitution of phenylalanine, methionine, or isoleucine for an amino acid corresponding to the amino acid at position 429 in the amino acid sequence set forth in SEQ ID NO: 1.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 14, 2019
    Inventors: Yuki Ishigaki, Satoru Ishihara, Shun-ichi Tanaka
  • Patent number: 10415023
    Abstract: The present invention addresses a problem of providing a lipase derived from a microorganism that is specific for short-chain to medium-chain fatty acids. A modified lipase is obtained by making a substitution in the amino acid sequence of a Candida cylindracea derived lipase, wherein the substitution is (1) a substitution of asparagine for an amino acid corresponding to the amino acid at position 428 in the amino acid sequence set forth in SEQ ID NO: 1; or (2) a substitution of phenylalanine, methionine, or isoleucine for an amino acid corresponding to the amino acid at position 429 in the amino acid sequence set forth in SEQ ID NO: 1.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: September 17, 2019
    Assignee: AMANO ENZYME INC.
    Inventors: Yuki Ishigaki, Satoru Ishihara, Shun-ichi Tanaka
  • Publication number: 20180208678
    Abstract: Aspects of the disclosure relate to compositions of enzyme-binding polypeptides (EBPs) that modify the substrate specificity of an enzyme and a method for identifying an EBP that modifies substrate specificity of an enzyme binding at least one substrate, the method comprising: contacting the enzyme with a polypeptide library comprising a plurality of EBPs that bind different epitopes of the enzyme; identifying EBPs that bind to the enzyme to form an EBP-enzyme complex; assaying for the activity level and substrate specificity of the EBP-enzyme complex; and identifying EBPs that modify the substrate specificity of the enzyme by identifying EBPs that, when in an EBP-enzyme complex, have a different substrate specificity than un-complexed EBP; wherein the catalytic rate constant of the EBP-enzyme complex is ?50% of the un-complexed enzyme for at least one substrate and/or wherein the EBP-enzyme complex retains binding to a substrate.
    Type: Application
    Filed: July 15, 2016
    Publication date: July 26, 2018
    Inventors: Shohei Koide, Shun-Ichi Tanaka, Akiko Koide
  • Publication number: 20160319259
    Abstract: The present invention addresses a problem of providing a lipase derived from a microorganism that is specific for short-chain to medium-chain fatty acids. A modified lipase is obtained by making a substitution in the amino acid sequence of a Candida cylindracea derived lipase, wherein the substitution is (1) a substitution of asparagine for an amino acid corresponding to the amino acid at position 428 in the amino acid sequence set forth in SEQ ID NO: 1; or (2) a substitution of phenylalanine, methionine, or isoleucine for an amino acid corresponding to the amino acid at position 429 in the amino acid sequence set forth in SEQ ID NO: 1.
    Type: Application
    Filed: December 8, 2014
    Publication date: November 3, 2016
    Inventors: Yuki Ishigaki, Satoru Ishihara, Shun-ichi Tanaka
  • Publication number: 20130224830
    Abstract: The present invention addresses the problem of providing an eggshell membrane solubilization method that is capable of solving the problems associated with carrying out treatment using acids and alkalis, or problems associated with the processing methods of the conventional art that use proteases; in other words, an eggshell membrane solubilization method that is capable of solving at least one of the following problems: (1) the need for pretreatment such as pulverization, sonication or boiling; (2) the need for prolonged treatment; and (3) a low decomposition rate (approximately 20%). Eggshell membranes are efficiently solubilized by using a protease in combination with a reducing agent.
    Type: Application
    Filed: August 12, 2011
    Publication date: August 29, 2013
    Applicant: AMANO ENZYME INC.
    Inventor: Shun-ichi Tanaka
  • Patent number: 6358999
    Abstract: A new use of a zinc tranexamate compound in the treatment of diabetes is disclosed. Oral administration of the compound adequately slows down absorption of glucose from digestive tracts by inhibiting &agr;-glucosidase in vivo. The zinc tranexamate compound is also effective in the treatment of insulin-resistant type II diabetes.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: March 19, 2002
    Assignee: Hamari Chemicals, LTD
    Inventors: Hajime Fujimura, Masakatsu Nozaki, Shun-ichi Tanaka, Reiko Natsuki
  • Publication number: 20010031785
    Abstract: A new use of a zinc tranexamate compound in the treatment of diabetes is disclosed. Oral administration of the compound adequately slows down absorption of glucose from digestive tracts by inhibiting &agr;-glucosidase in vivo. The zinc tranexamate compound is also effective in the treatment of insulin-resistant type II diabetes.
    Type: Application
    Filed: March 7, 2001
    Publication date: October 18, 2001
    Inventors: Hajime Fujimura, Masakatsu Nozaki, Shun-ichi Tanaka, Reiko Natsuki