Patents by Inventor Edward K. Fujimoto

Edward K. Fujimoto 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).

  • Process for the preparation of fluorogenic phenolic compounds
    Patent number: 6437179
    Abstract: A method is disclosed for preparing a fluorogenic phenolic compound with improved optical qualities for use in formulating a substrate solution for assay of peroxidase or peroxide activity. The method involves forming a solution under anoxic conditions which contains the phenolic compound and an aminopolycarboxylic acid or aminopolyphosphonic acid, or salt thereof, metal chelating agent and, while the solution is maintained under anoxic conditions, recovering the compound from the solution in an optically enhanced condition. A composition of matter is also disclosed which includes the fluorogenic phenolic compound in crystal form and a trace quantity of the metal chelating agent.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: August 20, 2002
    Assignee: Pierce Chemical Company
    Inventors: M. Dean Savage, Edward K. Fujimoto
  • Biotin containing heterobifunctional cleavable compounds
    Patent number: 5532379
    Abstract: Trifunctional cross-linking compounds are disclosed. The compounds contain the biotin moiety, the NHS active ester, and a photoactivatable aryl azide. The presence of a disulfide bond in association with either the ester or azide permits the compound to be cleaved.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: July 2, 1996
    Assignee: Pierce Chemical Company
    Inventor: Edward K. Fujimoto