Patents by Inventor Peter L. Steyn

Peter L. Steyn 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: 5047167
    Abstract: An aqueous cleaning composition is provided in a gel form having a viscosity on a Haake Rotovisco RV-100 Viscometer at 25.degree. C. under 5 sec.sup.-1 shear of from about 1,000 to 20,000 cps and under 21 sec.sup.-1 shear of from about 200 to 5,000 cps, a pH range from 11 to 13, and a steady state viscoelastic deformation compliance J.sub.e .degree. greater than 0.01, and wherein the light transmittance through a sample 2 cm thick is at least 10%. The composition will incorporate a polycarboxylic polymeric thickener, especially a cross-linked polyacrylic acid. Also present will be a structurant which can either be up to 2% alumina or up to 0.05% hectorite clay. Also present in the composition will be from 0.01 to 20% of an alkyl polyglycoside which ensures improved cleaning and clarity.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: September 10, 1991
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Peter L. Steyn, Robert Corring
  • Patent number: 4877544
    Abstract: The invention concerns detergent compositions comprising a special type of oxidation resistant nonionic surfactant and an oxidizing agent which may either be a hypochlorite or a peroxygen material. The surfactant component structurally comprises a C.sub.8 -C.sub.12 alkyl substituted phenoxy hydrophobe alkoxylated with ethylene oxide and/or propylene oxide, with the proviso that the ratio of ethylene oxide to propylene oxide is at least 1 but no higher than 10. Methyl or chloroethyl groups are used to endcap the surfactant.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: October 31, 1989
    Assignee: Lever Brothers Company
    Inventors: Robert Gabriel, Michael P. Aronson, Peter L. Steyn
  • Patent number: 4684473
    Abstract: A lubricating oil composition having improved friction reducing properties and the method of reducing friction in internal combustion engines by lubricating said engines with said lubricating oil which contains an effective friction reducing amount of an additive which is the reaction product of dimer carboxylic acid and a polyhydric alcohol having at least 2 hydroxyl groups in combination with an oil soluble alkanol or an oil soluble alkyl phosphate.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: August 4, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Jan Bock, Darrell W. Brownawell, Antonio Gutierrez, Max L. Robbins, Harold Shaub, Peter L. Steyn