Patents by Inventor John D. Humphreys

John D. Humphreys 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).

  • Stabilization of microbial rennet
    Patent number: 4853329
    Abstract: Microbial rennet from Rhizomucor pusillus which has been oxidized to increase its thermal lability has a normal pH of about 5.5 in aqueous solution. It has been discovered that the stability of such solutions can be increased by raising the pH to a level of from 6.0 to about 8.5.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: August 1, 1989
    Assignee: Miles Inc.
    Inventors: Herbert J. Havera, John D. Humphreys, Joan M. Jazdzewski
  • Thermostable Rhizomucor rennet having increased milk clotting activity
    Patent number: 4766074
    Abstract: Disclosed is a method for increasing the milk clotting ability and reducing the thermal stability of microbial rennet from Rhizomucor pusillus. The method involves treating the rennet with a methionine oxidizing composition and the anhydride of a dicarboxylic organic acid.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: August 23, 1988
    Assignee: Miles Inc.
    Inventors: Herbert J. Havera, John D. Humphreys
  • Method for increasing the milk clotting activity of thermolabile rhizomucor pusillus rennet
    Patent number: 4722900
    Abstract: Disclosed is a method for increasing the milk clotting ability and reducing the thermal stability of microbial rennet from Rhizomucor pusillus. The method involves treating the rennet with a methionine oxidizing composition and the anhydride of a dicarboxylic organic acid.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: February 2, 1988
    Assignee: Miles Laboratories, Inc.
    Inventors: Herbert J. Havera, John D. Humphreys
  • Fermentation process
    Patent number: 4155813
    Abstract: Fermentation process, e.g. for the production of an oxidation product such as vinegar, which comprises continuously cultivating a bacterial strain, preferably in a vessel of elongated shape, in a medium containing the substrate to be fermented in the presence of a hydrous oxide of a metal selected from the group consisting of titanium, vanadium, zirconium, iron and tin and a chelated polyhydroxy support. The bacterial strain used in the process is preferably chelated or complexed with the hydrous metal oxide and the polyhydroxy support.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: May 22, 1979
    Assignee: Gist-Brocades N.V.
    Inventors: Sidney A. Barker, Roderick N. Greenshields, John D. Humphreys, John F. Kennedy