Patents by Inventor Shojiro Iwahara

Shojiro Iwahara 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).

  • Gene encoding endo-.beta.-N-acetylglucosaminidase A
    Patent number: 5985637
    Abstract: An isolated DNA having a sequence encoding a polypeptide possessing endo-.beta.-N-acetylglucosaminidase A activity or functionally equivalent variants thereof; and a method for producing a polypeptide possessing endo-.beta.-N-acetylglucosaminidase A activity or functionally equivalent variants thereof using the isolated DNA by recombinant DNA technology.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: November 16, 1999
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Kaoru Takegawa, Shojiro Iwahara
  • Process for producing carbohydrate or glycoconjugate
    Patent number: 5955324
    Abstract: To provide a process for producing a carbohydrate or a glycoconjugate without forming any hydrolytic product of the remodeled sugar chain.A process for producing a carbohydrate or a glycoconjugate by a remodeling reaction in the presence of a glycosidase which performs the remodeling reaction in an aqueous medium containing a water-soluble ketone and/or dioxane. Examples of the glycosidase include endoglycosidases such as Endo-A. Examples of the ketone include acetone.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: September 21, 1999
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Jian Qiang Fan, Yuan Chuan Lee, Kaoru Takegawa, Shojiro Iwahara, Akihiro Kondo, Ikunoshin Kato