Patents by Inventor Yoshiko Okuzawa

Yoshiko Okuzawa 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: 4880796
    Abstract: An antimicrobial preparation of D-7-[.alpha.-(4-hydrooxy-6-methylnicotinamido)-4-hydroxyphenylacetamido]-3 -(1-methyltetrazol-5-yl)thiomethyl-.DELTA..sup.3 -cephem-4-sodium carboxylate (hereinafter referred to as "Compound A" of enhanced stability is disclosed, which comprises a microbially effective amount of Compund A and a stabilizer selected from the class consisting of benzoic acid, sodium benzoate and nicotinamide.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: November 14, 1989
    Assignees: Sumitomo Chemical Company, Limited, Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yoshiya Yamahira, Yoshiko Okuzawa, Keiji Fujioka, Shigeji Sato, Reimei Ishikawa
  • Patent number: 4244943
    Abstract: A method for preparing a stable urokinase injection by the liophilization of urokinase which comprises liophilizing an aqueous solution containing urokinase, human serum albumin and one or more amino acid compounds selected from polar amino acids and salt thereof. The urokinase injection obtained according to this method is excellent in the storing stability as compared with conventional urokinase preparations for injection.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: January 13, 1981
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshiya Yamahira, Keiji Fujioka, Yoshiko Okuzawa, Seiko Miura, Shigeji Sato