Patents by Inventor Stephen W. Morrall

Stephen W. Morrall 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: 5883065
    Abstract: An emulsified detergent composition is provided. The detergent composition comprises from about 0.1% to about 70%, by weight of the detergent composition, of a detersive surfactant wherein at least from about 70% to about 90%, by weight of the detersive surfactant, is a nonionic surfactant. The detergent composition also includes an electrolyte, in an amount sufficient to render the cloud point of the detergent composition to be less than about 20.degree. C., and water. The detersive surfactant and the water are in two phases in a weight ratio of about 1:10 to about 10:1 in the detergent composition. Superior cleaning and stain removal results because the emulsified detergent composition provides separation of the water and surfactant phases in a low water wash system over a broad temperature range and allows for cleaning below the cloud point of the surfactant system.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: March 16, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Ronald A. Swift, II, Stephen W. Morrall
  • Patent number: 5599782
    Abstract: Improved soil release agents for granular laundry detergents, typically used at levels as low as about 1% of a fully-formulated anionic surfactant-containing granular detergent, are reaction products of transesterifying and oligomerizing mixtures of monomers having the functions MO.sub.3 SC.sub.6 H.sub.4 C(O)--, M'O.sub.3 SC.sub.6 H.sub.3 {C(O)O--}.sub.2, --(O)CC.sub.6 H.sub.4 C(O)-- and --OCH.sub.2 CH.sub.2 O-- wherein M and M' are independently selected from lithium, potassium and sodium, more preferably sodium; said mixtures having mole ratio of MO.sub.3 SC.sub.6 H.sub.4 C(O)-- to --(O)CC.sub.6 H.sub.4 C(O)-- of from about 0.2:1 to about 1.4:1, mole ratio of MO.sub.3 SC.sub.6 H.sub.4 C(O)-- to M'O.sub.3 SC.sub.6 H.sub.3 {C(O)O--}.sub.2 of from about 0.67:1 to about 20:1 and mole ratio of MO.sub.3 SC.sub.6 H.sub.4 C(O)-- to --OCH.sub.2 CH.sub.2 O-- of from about 0.007:1 to about 0.51:1 and being substantially free from monomers of formula HOROH wherein R is propylene or higher alkyl.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: February 4, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Robert Y. L. Pan, Eugene P. Gosselink, Eugene J. Pancheri, Stephen W. Morrall
  • Patent number: 5538671
    Abstract: Soil removal performance of granular laundry detergents containing aluminosilicate builders is improved by presence of polyaspartic acid (or its water-soluble salts) as a co-builder/soil dispersant.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: July 23, 1996
    Assignee: The Procter & Gamble Company
    Inventor: Stephen W. Morrall
  • Patent number: 5256168
    Abstract: Anionic, sulfobenzoyl end-capped esters useful as soil release agents in granular detergent compositions. The terephthalate esters contain oxyethyleneoxy and oxy-1,2-propyleneoxy units, and are substantially amorphous in form.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: October 26, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Stephen W. Morrall, Eugene P. Gosselink, Robert Y. Pan, Bala C. Nayar
  • Patent number: 5182043
    Abstract: Anionic, sulfobenzoyl end-capped esters useful as soil release agents in granular detergent compositions. The terephthalate esters contain oxyethyleneoxy and oxy-1,2-propyleneoxy units, and are substantially amorphous in form.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: January 26, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Stephen W. Morrall, Eugene P. Gosselink, Robert Y. Pan, Bala C. Nayar