Patents by Inventor Malcolm N. A. Carter

Malcolm N. A. Carter 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).

  • Detergent compositions
    Patent number: 4711740
    Abstract: A detergent composition containing a detergent active, sodium carbonate and calcite also contains a copolymer to reduce deposition of insoluble material on fabrics. The copolymer is derived from a carboxylic monomer and a non-carboxylic monomer, with the non-carboxylic monomer being in excess. A 3:1 copolymer of sulphonated styrene and maleic anhydride is exemplified.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: December 8, 1987
    Assignee: Lever Brothers Company
    Inventors: Malcolm N. A. Carter, Reginald V. Scowen
  • Alkyl phosphoric salt-hydrocarbon wax lather controlled detergent compositions
    Patent number: 4465613
    Abstract: Mixed lather controllers comprise a C.sub.12 -C.sub.24 alkyl phosphoric acid or salt thereof together with a solid hydrocarbon wax having a melting point of 20.degree.-120.degree. C. The use of these mixed lather controllers is especially beneficial in built fabric washing detergent compositions.
    Type: Grant
    Filed: November 7, 1980
    Date of Patent: August 14, 1984
    Assignee: Lever Brothers Company
    Inventor: Malcolm N. A. Carter
  • Alkyl phosphoric acid polyvalent salts-mineral oil lather controlled detergent compositions
    Patent number: 4362642
    Abstract: An insoluble polyvalent salt of a C.sub.12 -C.sub.24 mono- or di-alkyl phosphoric acid is used as a lather controller in detergent compositions. The use of this material as lather controller is especially beneficial in built fabric washing detergent compositions.
    Type: Grant
    Filed: July 7, 1981
    Date of Patent: December 7, 1982
    Assignee: Lever Brothers Company
    Inventors: Malcolm N. A. Carter, Peter R. Garrett
  • Detergent compositions
    Patent number: 4088612
    Abstract: A detergent composition comprising a sulphobetaine, which can be prepared by reaction between a sultone and a tertiary amine, and an anionic detergent active compound in a molar ratio of at least 1 part to 2 parts, respectively. The compositions are effective in the absence of a detergency builder.
    Type: Grant
    Filed: January 4, 1977
    Date of Patent: May 9, 1978
    Assignee: Lever Brothers Company
    Inventors: Malcolm N. A. Carter, Brian McGhee, John F. Helliwell, John K. Marshall, Appayya R. Naik