Patents by Inventor Feng-Lung G. Hsu

Feng-Lung G. Hsu 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).

  • Process for producing concentrated laundry detergent by manufacture of low moisture content detergent slurries
    Patent number: 5453215
    Abstract: Detergent powders of high bulk density, containing anionic and nonionic surfactant and builders are prepared by spray-drying a low moisture content slurry containing liquid active surfactants to suspend inorganic solids including selected builders. A viscosity adjuster may be added to improve processability.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: September 26, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: William M. Karpusiewicz, Andra J. Vlosky, Feng-Lung G. Hsu, Charles F. Irwin, Mark E. Pflugfelder
  • Process for producing concentrated laundry detergent by manufacture of low moisture content detergent slurries utilizing liquid active surfactant blend technology
    Patent number: 5447651
    Abstract: Detergent powders of high bulk density, containing anionic and nonionic surfactant and builders are prepared by spray-drying a low moisture content slurry containing a prepared or pre-manufactured blend of liquid active surfactants to suspend inorganic solids including selected builders. A viscosity adjuster may be added to improve processability.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: September 5, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: William M. Karpusiewicz, Andra J. Vlosky, Feng-Lung G. Hsu, Charles F. Irwin, Mark E. Pfugfelder
  • Process for preparing a high bulk density detergent composition having improved dispensing properties
    Patent number: 5324455
    Abstract: A liquid surfactant composition mobile at a temperature within the range of 20.degree. to 80.degree. C. comprising: (a) up to 70% by weight of a sodium or potassium salt of an alkyl benzene sulphonate or alkyl sulphate; (b) up to 80% by weight of an ethoxylated nonionic surfactant; (c) water in an amount not exceeding 20% by weight; and (d) 0.5 to 80% by weight of a fatty acid having 8 to 22 carbon atoms. The liquid may be sprayed onto a solid particulate material at a temperature within the range of 20.degree. to 80.degree. C. to provide a particulate detergent composition having bulk density of at least 500 g/l and good dispensing properties.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: June 28, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Pierre Dumas, Tan T. Ho, Catherine J. Ormancey, Feng-Lung G. Hsu, Robert Ahart
  • Detergent compositions containing mobile liquid active systems
    Patent number: 5219495
    Abstract: A liquid detergent composition containing anionic detergent, nonionic detergent, excess caustic and high amounts of water is disclosed, together with processes for its preparation and use.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: June 15, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Feng-Lung G. Hsu