Patents by Inventor Mark A. Carver

Mark A. Carver 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 decomposition of acrylamide
    Patent number: 5188952
    Abstract: A process for the decomposition of acrylamide using an amidase (acrylamide amido hydrolyase) enzyme in which the enzyme has been heated to a temperature in the range 40.degree. to 80.degree. to induce increased activity of the enzyme. A method for preparing the enzyme and a process for producing acrylic acid are also claimed. The process for the decomposition of acrylamide is useful in particular for reducing the level of unreacted monomer associated with homo- and hetero-polymers of acrylamide. A temperature in the range 50.degree. to 62.degree. is particularly preferred for heating.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: February 23, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Mark A. Carver, John Hinton
  • Process for the production of acylamide amidohydrolase by Methylophilus methylotrophus
    Patent number: 5077212
    Abstract: This invention relates to a method for the production of acylamide amidohydrolase by culturing the species Methylophilus methylotrophus. This enzyme is used in the decomposition of acrylamide and in a process for the production of acrylic acid or a salt or ester thereof.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: December 31, 1991
    Assignee: Imperial chemical Industries PLC
    Inventors: David Byrom, Mark A. Carver
  • Process for the decomposition of acrylamide
    Patent number: 4925797
    Abstract: A process for the decomposition of acrylamide using an amidase (acrylamide amido hydrolase) enzyme in which the enzyme is induced in strains of Methylophilus methylotrophus. A method for inducing the enzyme and a process for producing acrylic acid are also claimed. The process for the decomposition of acrylamide is useful in particular for reducing the level of unreacted monomer associated with homo- and hetero- polymers of acrylamide. The activity of the enzyme can be increased by heating it to a temperature in the range 40.degree. to 80.degree. C.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: May 15, 1990
    Assignee: Imperial Chemical Industries plc
    Inventors: David Byrom, Mark A. Carver