Patents by Inventor Alejo V. Roy

Alejo V. Roy 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).

  • Lipase composition for glycerol ester determination
    Patent number: 4056442
    Abstract: A synergistic composition of microbial lipases from Rhizopus arrhizirs and Candida cylindracea is used for the hydrolysis of glycerol esters such as triglycerides in the determination of glycerol esters present in an aqueous medium such as body fluid.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: November 1, 1977
    Assignee: The Dow Chemical Company
    Inventors: Charles Y. Huang, Alejo V. Roy
  • Urea determination of biological fluids using diacetylmonoxime reaction
    Patent number: 4040787
    Abstract: A unique composition and method for the determination of urea using diacetylmonoxime and thiosemicarbazide in an aqueous strong acid to which has been added a color-intensifying amount of a cation selected from the group consisting of ferric and ceric; and a linearity-enhancing amount of 4-amino-antipyrine.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: August 9, 1977
    Assignee: The Dow Chemical Company
    Inventors: Alejo V. Roy, Jane R. Heiwig