Patents by Inventor Robert C. Pierce

Robert C. Pierce 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).

  • Patent number: 4454060
    Abstract: A foaming light duty aqueous liquid detergent composition especially useful for hand dishwashing containing 5 to 50 wt. % of non-cationic detergent active material, optional foam boosters and hydrotropes, and 0.1 to 10 wt. % of a cationic foam-stabilizing copolymer containing a major weight proportion of units derived from acrylamide and/or methacrylamide, about 0.5 to 2 wt. % of quaternary nitrogen as present in quaternary ammonium groups, and about 0.1 to 10 wt. % of pendant C.sub.8-24 hydrophobic, preferably alkyl groups.Said quaternary ammonium group-containing monomer has the formula ##STR1## wherein R.sub.1 is H or CH.sub.3, R.sub.2 and R.sub.3 are independently C.sub.1-4 alkyls,R.sub.4 is C.sub.1-4 akyl, C.sub.2-3 hydroxyalkyl, or benzylR.sub.2, R.sub.3 and R.sub.4 together contain less than 9 carbon atoms,Z is a water-solubilizing salt-forming anion, andM may be --CO--X--, then X is --O-- or --NR.sub.5 --, R.sub.5 is H or C.sub.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: June 12, 1984
    Assignee: Colgate-Palmolive Company
    Inventors: Kuo-Yann Lai, Robert C. Pierce, Jean Dupre, H. Scott Killam
  • Patent number: 4430237
    Abstract: A detergent composition consisting essentially of a water soluble mixture of higher alkyl glyceryl ether nonionic surfactants having the structural formula ##STR1## where R is a C.sub.8 -C.sub.16 alkyl radical, and n has a value of 1, 2 and 3, with an n distribution of 12-49% n=1 ethers, 24-61% n=2 ethers and 6-59% n=3 ethers.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: February 7, 1984
    Assignee: Colgate-Palmolive Co.
    Inventors: Robert C. Pierce, Frank J. Bala, Jr.
  • Patent number: 4418011
    Abstract: An antistatic detergent composition useful in the laundering of fabrics containing nonionic surfactants, an antistatic amount of isostearic acid and a specified cationic polymer; and a method of imparting antistatic properties to fabrics during laundering, which consists in contacting fabrics with said composition in the wash cycle.
    Type: Grant
    Filed: August 3, 1982
    Date of Patent: November 29, 1983
    Assignee: Colgate-Palmolive Company
    Inventors: Robert A. Bauman, Robert C. Pierce
  • Patent number: 4348382
    Abstract: Dentifrice composition comprising sodium monofluorophosphate and compatible polishing material, at least a major portion of which is dicalcium phosphate dihydrate having a particle size such that all particles are above 3 microns in size at at least 65% of the particles are about 3-10 microns in size.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: September 7, 1982
    Assignee: Colgate-Palmolive Company
    Inventors: Robert C. Pierce, Robert L. Mitchell
  • Patent number: 4296096
    Abstract: A dentifrice of high viscosity wherein a water-absorbent anionic polyelectrolyte polymer, such as a polyacrylate, having at least one polyvalent cation, such as aluminum, and having a particle size less than about 74 microns, is employed as gelling agent and also effects the principal humectant function of the dentifrice vehicle.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: October 20, 1981
    Assignee: Colgate-Palmolive Company
    Inventor: Robert C. Pierce