Patents Represented by Attorney Mary Bak

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  • Method of making starch acetate using an acid catalyst
    Patent number: 5710269
    Abstract: Methods of synthesizing starch acetate containing at least 20% high molecular weight carbohydrates using a MSA catalyst alone, or in combination with a co-catalyst promoting cross-linking, such a phosphoric acid, are described. The MSA is desirably added slowly following beginning of the exothermic reaction of starch, acetic acid and acetic anhydride.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 20, 1998
    Assignee: Hoechst Celanese Corp.
    Inventor: Bernice I. Feuer
  • DNA sequences encoding phospholipase A.sub.2 enzyme and processes for producing enzyme
    Patent number: 5322776
    Abstract: The invention provides novel DNA and peptide sequences encoding a family of phospholipase A.sub.2 enzymes, with specific activities of approximately 20 .mu.mol/min/mg in the mixed micelle assay. These enzymes are useful in methods for detecting the anti-inflammatory potential of various chemical agents. The invention also details novel methods for determining such potential using the novel sequences, methods for making the novel peptides, and methods for developing new anti-inflammatory drugs.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: June 21, 1994
    Assignee: Genetics Institute, Inc.
    Inventors: John L. Knopf, James Clark
  • High yield production of active Factor IX
    Patent number: 4770999
    Abstract: High yields of active Factor IX are produced by culturing a CHO cell line transfected with chromosomally-integrated Factor IX cDNA in medium to which vitamin K is added.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: September 13, 1988
    Assignee: Genetics Institute, Inc.
    Inventors: Randal J. Kaufman, Charles B. Shoemaker, Louise C. Wasley