Patents by Inventor Yi-Chang Fu

Yi-Chang Fu 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: 5888955
    Abstract: Liquid dishwashing detergent compositions comprising a co-surfactant selected from amine oxides, betaines, branched alkyl carboxylates and non bridged polyhydroxy fatty acid amides. The dishwashing composition further comprises a bridged polyhydroxy fatty acid amide for improved sudsing performance.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: March 30, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Peter Robert Foley, Joanna Margaret Clarke, Yi-Chang Fu, Phillip Kyle Vinson
  • Patent number: 5698046
    Abstract: Automatic dishwashing detergents containing N-alkoxy or N-aryloxy polyhydroxy fatty acid amide surfactants which provide not only improved cleaning, but also improved filming and spotting performance on tableware are described. Thus, C.sub.12 -C.sub.14 N-(3-methoxypropyl) glucamide is used in automatic dishwashing compositions which, optionally, can be formulated to be free from chlorine bleach or phosphate builders. Weak builders such as citrate and perborate or percarbonate bleach can be used in the compositions, as can various detersive enzymes.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: December 16, 1997
    Assignee: The Procter & Gamble Comapny
    Inventors: James Charles Theophile Roger Burckett St. Laurent, Daniel Stedman Connor, Yi-Chang Fu, Jeffrey John Scheibel, William Michael Scheper
  • Patent number: 5669984
    Abstract: A method for hand washing dishes comprises contacting dishes with an aqueous solution containing polyhydroxy amine compound and one or more surfactant materials.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: September 23, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Jeffrey John Scheibel, Daniel Stedman Connor, Yi-Chang Fu, Jean-Francois Bodet, Lesley Alexandra Brown, Phillip Kyle Vinson, Randall Thomas Reilman
  • Patent number: 5620952
    Abstract: Stock solutions of polyhydroxy fatty acid amide surfactants at high concentrations are characterized by their unfortunate tendency to thicken, or gel, on storage. Mild heating and the inclusion of carboxylates such as oxydisuccinate, citrate or tartrate-succinate maintain the viscosity of such solutions below about 2,000 centipoise, even at temperatures around 30.degree. C.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: April 15, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Yi-Chang Fu, Peter R. Foley, Julie A. Dyet, Peter G. Mather, Robert Mermelstein, Brian J. Roselle
  • Patent number: 5534197
    Abstract: Gemini polyhydroxy fatty acid amide compounds and laundry, cleaning, fabric and personal care compositions comprising these compounds.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: July 9, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Jeffrey J. Scheibel, Daniel S. Connor, Yi-Chang Fu
  • Patent number: 5512699
    Abstract: Poly polyhydroxy fatty acid amide compounds and laundry, cleaning, fabric and personal care compositions comprising these compounds.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: April 30, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Daniel S. Connor, Yi-Chang Fu, Jeffrey J. Scheibel
  • Patent number: 5510049
    Abstract: Laundry or toilet bars comprising one or more surface active agents such as soaps or synthetic detergents are prepared using an alkoxy or aryloxy polyhydroxy fatty acid amide to improve bar smear, cracking or wearing qualities, Palm oil chain-length fatty acid amides of N-(3-methoxypropyl) glucamine and N-(2-methoxyethyl) glucamine are examples of the glucamide surfactant used in such bars.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: April 23, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Daniel S. Connor, Yi-Chang Fu, Jeffrey J. Scheibel
  • Patent number: 5489393
    Abstract: High sudsing detergent compositions comprising N-alkoxy polyhydroxy fatty acid amides are provided by the addition of secondary carboxylate surfactants. Thus, cocofatty acid N-(3-methoxypropyl) glucamide is used in liquid, granular or bar compositions in combination with conventional detergent ingredients and secondary fatty acids such as 2-methyl undecanoic acid. The compositions exhibit high, relatively persistent suds and high emulsifying and cleaning properties, especially with respect to greasy soils of the type commonly found on eating utensils and in food stains on fabrics.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: February 6, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Daniel S. Connor, Jeffrey J. Scheibel, Yi-Chang Fu
  • Patent number: 5338491
    Abstract: Detergent compositions containing N-(1,2 propanediol) fatty acid amide surfactants of the general type RC(O)NR.sup.1 CH.sub.2 CHOHCH.sub.2 OH, especially where R.sup.1 is methyl or hydroxyethyl, are useful surfactants in laundry detergents, dishwashing liquids, shampoos, bar soaps, and hard surface cleaners. The amide surfactants provide good cleaning even in the absence of LAS surfactants.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: August 16, 1994
    Assignee: The Proctor & Gamble Co.
    Inventors: Daniel S. Connor, Jeffrey J. Scheibel, Yi-Chang Fu, Bruce P. Murch, Randall A. Watson, Kirsten L. McKillop
  • Patent number: 5318728
    Abstract: Low-sudsing detergent compositions comprise an N-alkyl polyhydroxy fatty acid amide surfactant, wherein the N-alkyl substituent is at least C.sub.2, preferably C.sub.3 -C.sub.8. Such compositions are useful under cleaning conditions where excessive sudsing may be problematic.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: June 7, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Athanasios Surutzidis, Jean-Pol Boutique, Yi-Chang Fu, Bruce P. Murch, Daniel S. Connor, Jeffrey J. Scheibel
  • Patent number: 5223179
    Abstract: Detergent compositions containing N-(1,2 propanediol) fatty acid amide surfactants of the general type RC(0)NR.sup.1 CH.sub.2 CHOHCH.sub.2 OH, especially where R.sup.1 is methyl or hydroxyethyl, are useful surfactants in laundry detergents, dishwashing liquids, shampoos, bar soaps, and hard surface cleaners. The amide surfactants provide good cleaning even in the absence of LAS surfactants.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: June 29, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Daniel S. Connor, Jeffrey J. Scheibel, Yi-Chang Fu, Bruce P. Murch, Randall A. Watson, Kirsten L. McKillop
  • Patent number: 4643919
    Abstract: The present invention relates to textile treating compositions which are especially useful for treating textiles in the rinse cycle of a textile laundering operation to provide improved fabric softening and conditioning benefits. The textile treatment compositions comprise a substantially water-insoluble cationic fabric softening agent in combination with a substantially saturated lipid component containing one or more phosphoglycerides. The present invention further relates to a method for softening and conditioning textiles by treating the textiles, preferably during the rinse cycle of a textile laundering operation, with a combination of the softening agent and substantially saturated lipid component.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: February 17, 1987
    Assignee: The Procter & Gamble Company
    Inventor: Yi-Chang Fu