Patents by Inventor Keisuke Tsuzuki

Keisuke Tsuzuki 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).

  • Mutated photoproteins and their uses
    Publication number: 20050130262
    Abstract: Mutated photoproteins derived from isolated jellyfish photoproteins, characterised in that they exhibit a thermostability higher than that of the photoproteins from which they are derived, and are called thermostable mutated photoproteins, and/or a luminescence duration longer than that of the photoproteins from which they are derived, and are called persistent mutated photoproteins. The invention also concerns the use of said mutated photoproteins in methods for detecting in vitro molecules in a biological sample, methods for detecting compounds with enzymatic activity in a biological sample, or methods for detecting intracellular calcium variations.
    Type: Application
    Filed: July 12, 2002
    Publication date: June 16, 2005
    Inventors: Bertrand Lambolez, Nathalie Gibelin, Gaelle Bourout, Ludovic Tricoire, Olivier Courjean, Keisuke Tsuzuki, Jean Rossier
  • Process of preparing 5-(2-substituted-4-nitrophenyl)-oxazole, novel oxazole compound, and process of preparing the same
    Patent number: 6423849
    Abstract: A 5-(2-substituted-4-nitrophenyl)-oxazole is prepared by decarboxylating a 5-(2-substituted-4-nitrophenyl)-4-oxazolecarboxylic acid in an aprotic amide solvent containing a protic compound. A 5-(2-substituted-4-nitrophenyl)-oxazolecarboxylic acid and a 5-(2-substituted-4-nitrophenyl)-carboalkoxyoxazole, which are novel compounds, are provided.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: July 23, 2002
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Akio Katsuura, Azusa Yonezawa, Keisuke Tsuzuki, Kazumasa Hirata
  • Process of preparing 5-(2-substituted-4-nitrophenyl)-oxazole, novel oxazole compound, and process of preparing the same
    Publication number: 20020035265
    Abstract: A 5-(2-substituted-4-nitrophenyl)-oxazole is prepared by decarboxylating a 5-(2-substituted-4-nitrophenyl)-4-oxazolecarboxylic acid in an aprotic amide solvent containing a protic compound. A 5-(2-substituted-4-nitrophenyl)-oxazolecarboxylic acid and a 5-(2-substituted-4-nitrophenyl)-carboalkoxyoxazole, which are novel compounds, are provided.
    Type: Application
    Filed: December 26, 2000
    Publication date: March 21, 2002
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Akio Katsuura, Azusa Yonezawa, Keisuke Tsuzuki, Kazumasa Hirata