Patents by Inventor Philippus C. van der Hoeven

Philippus C. van der Hoeven 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).

  • Nonaqueous liquid cleaning products containing solubilized biopolymer
    Patent number: 5433884
    Abstract: Non-aqueous liquid cleaning product comprising a liquid phase and dry particulate solubilized biopolymer material, that improves dispersibility, a method for preparing the biopolymer material and a method for preparing non-aqueous liquids comprising the biopolymer material.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: July 18, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Paul A. Altieri, James Eden, Michael C. Gribnau, Philippus C. Van Der Hoeven, Leendert Hoogendijk, Helena M. De Roo, Daniel B. Solarek
  • Liquid cleaning products having improved storage capacity without settling
    Patent number: 5389284
    Abstract: Non-aqueous liquid cleaning products are formulated by dispersing particulate solids in an organic solvent by using a structurant or deflocculant which causes a viscosity reduction at low shear rates in that solids/solvent system or an equivalent system in which the solids volume fraction is sufficiently high to raise the viscosity of the solvent. The organic solvent may be liquid surfactant and/or other kind. The solids are any usable in liquid cleaning products. The structurant is any acid, salt or base which fulfils the aforementioned test.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: February 14, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Philippus C. van der Hoeven, Arie van der Linden, Pieter Versluis, Terence A. Clarke
  • Stable nonaqueous liquid detergents containing a metal oxide of bulk density of 200-1,000 g/l
    Patent number: 5368767
    Abstract: A non-aqueous liquid cleaning composition comprising a particulate solid phase suspended in a non-aqueous liquid phase, wherein the solid phase includes a metal oxide having a bulk density of 200 to 1,000 g/l.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: November 29, 1994
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: Cornelis B. Donker, Philippus C. van der Hoeven, Mansur S. Mohammadi
  • Non-aqueous liquid detergent compositions containing di-sulphonic acids as deflocculants
    Patent number: 4950424
    Abstract: A substantially non-aqueous liquid cleaning product comprising solid particles dispersed in a liquid solvent phase and a deflocculant which comprises a di-sulphonic acid or a salt thereof.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: August 21, 1990
    Assignee: Lever Brothers Company
    Inventors: Philippus C. van der Hoeven, Nicolaas C. Laane, Peter Versluis, Adrianus Visser
  • Particulate bleach compositions
    Patent number: 4283302
    Abstract: Particulate bleach (and detergent) compositions with improved bleach efficiency are disclosed comprising a particulate peroxybleach compound and tetraacetyl ethylene diamine (TAED), said TAED having the following particle size distribution as determined by sieve analysis:0-20%>150 .mu.m10-100%>100 .mu.m<150 .mu.m0-50%<75 .mu.m0-20%<50 .mu.m,and being contained in granules in combination with a granulating agent, said granules having particle size ranging from 100-2000 .mu.m and comprising 10-99% by weight of TAED. The particulate bleach composition does not suffer from significant sedimentation and/or dissolution problems and does not suffer from significant decomposition problems during storage.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: August 11, 1981
    Assignee: Lever Brothers Company
    Inventors: Roger Foret, Philippus C. van der Hoeven