Patents by Inventor Shang-Ren Wu

Shang-Ren Wu 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: 5552066
    Abstract: Biodegradable compounds which are effective fabric conditioning molecules are described as having Formula I ##STR1## wherein R.sub.1 is a C.sub.1-4 alkyl or alkenyl, R.sub.2 and R.sub.3 are each independently a C.sub.7 -C.sub.30 straight or branched alkyl or alkenyl, R.sub.4 is a C.sub.1-4 alkyl or alkenyl or hydroxyalkyl and X is a water soluble anion.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: September 3, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mohammad A. Rahman, Anthony Hung, Shang-Ren Wu
  • Patent number: 5520828
    Abstract: Novel fabric conditioners based on pyridine carboxylic acid esters or amides are described. The compounds are effective fabric conditioners and are biodegradable. Compositions including the compounds and a method of using the compositions are also described.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: May 28, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Shang-Ren Wu, Eddie N. Gutierrez
  • Patent number: 5500139
    Abstract: Novel fabric conditioning agents which contain either an ester or a NH link between a glyceric carboxyl group and a quaternary ammonium group are described. The compounds based on glyceric acid are both effective fabric conditioners and biodegradable, and may be formulated in any conventional physical form to form a fabric conditioning composition. A method of using the composition is also described.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: March 19, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mohammad A. Rahman, Robert W. R. Humphreys, Shang-Ren Wu
  • Patent number: 5488146
    Abstract: A process for the preparation of SCMOS from sulfur trioxide, maleic anhydride, glycolic acid, and alkaline earth metal hydroxide or mixtures of alkaline earth metal and alkali metal hydroxides is disclosed which cooperatively control pH, temperature, time and ratio of reactants.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: January 30, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie N. Gutierrez, Shang-Ren Wu
  • Patent number: 5472642
    Abstract: Diaminoalkyl di(sulfosuccinate) compounds useful as builders are disclosed together with a method for their preparation and detergent compositions for their use.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: December 5, 1995
    Assignee: Lever Brothers Company, Division of Conopco Inc.
    Inventors: Eddie N. Gutierrez, Shang-Ren Wu
  • Patent number: 5466875
    Abstract: A process for the purification and recovery of 2,2'-oxydisuccinate moieities from a reaction mixture containing maleate, malate, fumarate, and alkaline earth metal is disclosed which reduces the pH to about 3.8 to 4.2 with sulfuric acid and then produces the calcium salt of the 2,2'-oxydisuccinate by heating and precipitation.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: November 14, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Eddie N. Gutierrez, Shang-Ren Wu
  • Patent number: 5466868
    Abstract: A process for the preparation of enriched reaction mixtures containing 2,2'-oxydisuccinate (alkaline earth metal salts) is disclosed, by pH reduction and removal of alkaline earth metal malates.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: November 14, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Shang-Ren Wu, Donna Wu, Eddie N. Gutierrez
  • Patent number: 5456846
    Abstract: A method of conditioning fabrics with a composition containing novel agents which contain either an ester or a NH link between a glyceric carboxyl group and a quaternary ammonium group is described. The compounds based on glyceric acid are both effective fabric conditioners and biodegradable, and may be formulated in any conventional physical form to form the fabric conditioning composition.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: October 10, 1995
    Assignee: Lever Brothers Company
    Inventors: Mohammad A. Rahman, Robert W. R. Humphreys, Shang-ren Wu
  • Patent number: 5429756
    Abstract: Biodegradable compounds which are effective fabric conditioning molecules are described as having Formula I ##STR1## wherein R.sub.1 is a C.sub.1-4 alkyl or alkenyl, R.sub.2 and R.sub.3 are each independently a C.sub.7 -C.sub.30 straight or branched alkyl or alkenyl, R.sub.4 is a C.sub.1-4 alkyl or alkenyl or hydroxyalkyl and X is a water soluble anion.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: July 4, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mohammad A. Rahman, Anthony P. C. Hung, Shang-Ren Wu
  • Patent number: 5419843
    Abstract: Novel fabric conditioners based on pyridine carboxylic acid esters or amides are described. The compounds are effective fabric conditioners and are biodegradable. Compositions including the compounds and a method of using the compositions are also described.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: May 30, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Shang-Ren Wu, Eddie N. Gutierrez
  • Patent number: 5409902
    Abstract: Oral hygiene antiplaque compositions which include as an active ingredient a glyceroglycolipid having an amine or ether linkage and containing a .beta.-D-galactose moiety (a sugar moiety recognized by lectins on oral bacteria). The compositions containing glyceroglycolipids provide enhanced inhibition of bacterial adhesive interactions and may provide a surfactancy benefit and/or antibacterial benefit.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: April 25, 1995
    Assignee: Lever Brothers Company
    Inventors: Robert G. Carson, Anthony Hung, Kurt M. Schilling, Shang-Ren Wu
  • Patent number: 5391823
    Abstract: A process for the preparation of 2,2'-oxydisuccinate from maleate, malate and alkaline earth metal hydroxide is disclosed which cooperatively control pH, temperature, time and ratio of reactants to effectively avoid substantial phase separation.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: February 21, 1995
    Assignee: Lever Brothers Company
    Inventors: Eddie N. Gutierrez, Michael I. Hill, Martina Santoso, Donna Wu, Shang-Ren Wu
  • Patent number: 5385685
    Abstract: The present invention relates to detergent compositions comprising a glyceroglycolipid having one or two ether linkages for use as a surfactant or cosurfactant in the detergent compositions.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: January 31, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Robert W. Humphreys, Anthony Hung, Shang-Ren Wu, Abid N. Khan-Lodhi
  • Patent number: 5358656
    Abstract: The present invention relates to liquid detergent compositions wherein the detergent active mixture of the compositions comprises 65 to 99% of a glyceroglycolipid compound having an amine linkage and 1 to 35% of a nonionic surfactant. Unexpectedly, applicants have discovered a synergy in the mixture of these surfactants which leads to enhanced detergency.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: October 25, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Robert W. Humphreys, Anthony Hung, Shang-Ren Wu, Abid N. Khan-Lodhi
  • Patent number: 5352386
    Abstract: The subject invention relates to detergent compositions in which N-alkylerythronamides react synergistically with surfactants having an HLB about that of octaethylene glycol mono-decyl ether to provide enhanced detergency provided that said compositions are also free of boron.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: October 4, 1994
    Assignee: Lever Brothers Company
    Inventors: Mohammad A. Rahman, Robert W. Humphreys, Shang-Ren Wu, Abid N. Khan-Lodhi
  • Patent number: 5352387
    Abstract: The present invention relates to novel surfactants based on readily available materials, i.e., glyceric acid. In particular, it relates to novel N-alkylglyceramide surfactants having the formula ##STR1## wherein R is a C.sub.8 -C.sub.24 straight or branch-chained, saturated or unsaturated aliphatic hydrocarbon. These surfactants can be used in detergent compositions as surfactants together with cosurfactants to greatly enhance foam stability of the detergent compositions.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: October 4, 1994
    Assignee: Lever Brothers Company
    Inventors: Mohammad A. Rahman, Shang-Ren Wu
  • Patent number: 5236612
    Abstract: The present invention provides detergent compositions comprising alkyl glycerates as a coactive in combination with cosurfactants for enhanced removal of oil.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: August 17, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Mohammad A. Rahman, Robert W. Humphreys, Shang-Ren Wu
  • Patent number: 5062995
    Abstract: Novel vinyl carbamates, prepared from vinyl chloroformate and amino acids and polymers containing from 5-100% of these novel vinyl carbamates are disclosed. These polymers act as sequestering agents and are useful as detergency builders. Detergent compositions incorporating the polymers can be prepared without use of phosphorus-containing detergent builders.Formulas for the novel carbamates and polymers are as follows:Vinyl carbamate compounds of the Formula: ##STR1## wherein a and b are independently 0, 1, or 2, or even greater; R is hydrogen methyl, ethyl or long chain alkyl, alkenyl or aryl and M is C.sub.1-4 alkyl, hydrogen, or a cation which forms a substantially water soluble salt with said compound at ambient temperatures; andPolymeric compounds of the formula: ##STR2## wherein a and b are independently 0, 1 or 2 or even greater; m is at least one; R is hydrogen, methyl, ethyl, or long chain alkyl, alkenyl or aryl and M is C.sub.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: November 5, 1991
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Shang-Ren Wu, Albert Garofalo
  • Patent number: 4692169
    Abstract: Carbonaceous slurries are provided in which the carbonaceous slurry stabilizer is selected from the group of(1) the alkyl ether of a polygalactomannan alone, or in combination with xanthan gum or(2) the hydroxyalkyl ether of a polygalactomannan in combination with xanthan gum, or(3) a mixture of said alkyl ether, said hydroxyalkyl ether and said xanthan gum.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: September 8, 1987
    Assignee: Henkel Corp.
    Inventors: Warren W. Howland, Robert E. Arquette, Shang-Ren Wu
  • Patent number: 4659811
    Abstract: A process for the alkaline refining of gum splits is provided. Also provided are hydraulic fluid fracturing compositions which contain alkaline refined gum and which exhibit superior solution viscosity and low residue after break. Also provided is a method of hydraulic fluid fracturing of the subterranean formations surrounding a well using such compositions.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: April 21, 1987
    Assignee: Henkel Corporation
    Inventor: Shang-Ren Wu