Patents by Inventor Robin S. Heslam

Robin S. Heslam 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).

  • Fabric softening detergent compositions containing smectite clays having a lattice charge deficiency
    Patent number: 5209857
    Abstract: A detergent composition for washing and softening fabrics comprising at least one detergent active material and, as a fabric softening agent, a smectite clay mineral which is a 2:1 layer phyllosilicate possessing a lattice charge deficiency in the range of 0.2 to 0.4 g equivalents per half unit cell.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: May 11, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Ian R. Kenyon, Robin S. Heslam, William D. Emery, Hermes J. Murakami
  • Bleaching and cleaning compositions
    Patent number: 4259200
    Abstract: The stability of ethylene diamine tetra-(methylene phosphate)--EDTMA--and diethylene triamine penta-(methylene phosphonate)--DTPMP--incorporated as peracid stabilizer in bleaching and cleaning compositions comprising a percompound and an organic activator for said percompound is improved if said phosphonate compound is present as a complex of a metal ion selected from the group consisting of calcium, magnesium, zinc and aluminium ions, the molar ratio of said metal ion to said phosphonate compound in the complex being at least 1:1. Compositions comprising a percompound bleach, an organic activator and said metal complex of EDTMP or of DTPMP are provided.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: March 31, 1981
    Assignee: Lever Brothers Company
    Inventors: Peter S. Sims, Robin S. Heslam, Richard L. Morris