Patents by Inventor Henriette Nadj

Henriette Nadj 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).

  • Kinetic assay for acid phosphotase and composition therefore
    Patent number: 4162194
    Abstract: A kinetic assay is provided for determining the acid phosphatase in an aqueous solution by measuring the amount of of reduced coenzyme produced. The assay is based on the following coupled reactions:I. organic phosphate .sup.acid phosphatase PO.sub.4.sup.-3 +organic alcoholII. maltose+PO.sub.4.sup.-3 maltose phosphorylase glucose+ .beta.-D-glucose-1-phosphate;III. .beta.-D-glucose-1-phosphate .beta.-D-phosphoglucomutase glucose-6-phosphate;IV. glucose-6-phosphate+NAD glucose-6-phosphate dehydrogenase NADH+6-phosphogluconate.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: July 24, 1979
    Assignee: Beckman Instruments, Inc.
    Inventors: Kenneth J. Pierre, Ker-Kong Tung, Henriette Nadj
  • Kinetic assay for inorganic phosphates and composition therefore
    Patent number: 4159923
    Abstract: A kinetic assay is provided for determining the inorganic phosphate content in an aqueous solution by measuring the amount of reduced coenzyme produced. The assay is based on the following coupled reactions:I. maltose+PO.sub.4.sup.-3 maltose phosphorylase glucose+.beta.-D-glucose-1-phosphate;Ii. .beta.-d-glucose-1-phosphate .beta.-D-phosphoglucomutase glucose-6-phosphate;Iii. glucose-6-phosphate+NAD glucose-6-phosphate dehydrogenase NADH+6-phosphogluconate.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: July 3, 1979
    Assignee: Beckman Instruments, Inc.
    Inventors: Kenneth J. Pierre, Ker-Kong Tung, Henriette Nadj
  • Reagent system for beta-amylase assay
    Patent number: 4097336
    Abstract: A reagent system for beta-amylase assay comprising:A polysaccharide having glucose molecules primarily connected through alpha 1,4 linkagesPhosphate ionsMaltose phosphorylaseA co-enzyme selected from a group consisting of beta-nicotinamide-adenine dinucleotide, beta-nicotinamide-adenine dinucleotide phosphate, and mixture thereofGlucose-6-phosphate dehydrogenaseBeta-D-phosphoglucomutaseMutarotase.
    Type: Grant
    Filed: January 11, 1977
    Date of Patent: June 27, 1978
    Assignee: Beckman Instruments, Inc.
    Inventors: Kenneth J. Pierre, Ker-Kong Tung, Henriette Nadj
  • Kinetic assay for alpha-amylase
    Patent number: 4036697
    Abstract: A kinetic assay is provided for measuring alpha-amylase content in aqueous solutions. The assay is based on the following reactions:alpha-1,4 linked glucan .sup.alpha-amylase alpha-maltosealpha-maltose + PO.sub.4 .sup.-.sup.-.sup.- .sup.MP Glucose + beta-D-G-1-Pbeta-D-G-1-P .sup.beta-PGM G-6-PG-6-P + NAD .sup.G6PDH 6-P-G + NADHthe concentration of alpha-amylase is determined by measuring the rate of increase in absorbance associated with the production of NADH which is a measure of the activity of alpha-amylase.A novel reagent system is used with the assay and comprises:A polysaccharide having glucose molecules primarily connected through alpha 1,4 linkageMaltose phosphorylase (MP)Phosphate ions (PO.sub.4 .sup.-.sup.-.sup.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: July 19, 1977
    Assignee: Beckman Instruments, Inc.
    Inventors: Kenneth Jonas Pierre, Ker-Kong Tung, Henriette Nadj