Patents by Inventor Toan Trinh

Toan Trinh 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: 5500138
    Abstract: The present invention relates to liquid and solid biodegradable fabric softener compositions combined with highly enduring substantive perfumes. These compositions are naturally, or synthetically, derived perfumes which are hydrophobic, defined by having a low rinse water solubility (ClogP is greater than or equal to 3.0). These perfumes also have low volatility, a boiling point of 250.degree. C., or greater. These compositions provide better perfume deposition on treated fabric, and consequently are not substantially lost during the rinse and drying cycle for less impact on the environment. Also, these perfumes improve the physical stability of the softener composition.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: March 19, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Dennis R. Bacon, Toan Trinh
  • Patent number: 5476599
    Abstract: The present invention relates to dryer-activated fabric softening compositions comprising: (A) quaternary ammonium compounds; (B) a carboxylic acid salt of a tertiary amine and/or a tertiary amine ester; and (C) optionally, a nonionic softener; wherein the IV of the total number of fatty acyl groups present in (A), (B), and (C) is from about 3 to about 60. These compositions exhibit good antistatic properties as well as improved delivery from a substrate.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: December 19, 1995
    Assignee: The Procter & Gamble Company
    Inventors: John R. Rusche, Frederick A. Hartman, Mark R. Sivik, Dennis R. Bacon, Toan Trinh
  • Patent number: 5460736
    Abstract: The present invention relates to a solid particulate or liquid rinse-added fabric softening composition containing specific chlorine scavengers. The solid particulate composition, comprises from about 50% to about 95%, by weight of the composition, of biodegradable, cationic quaternary ammonium fabric softening compound and an effective amount of chlorine scavenger selected from the group consisting of: amines; ammonium salts; amino acids, but not lysine; polyamino acids; polyethyleneimines; polyamines, but not di(higher alkyl)cyclic amines nor their condensation products; polyamineamides; polyacrylamides; and mixtures thereof. The solid particulate composition further comprises from about 0% to about 30%, by weight of the composition, of a modifier, for viscosity, dispersibility, or both; and from about 0% to about 20%, by weight of the composition, of a pH modifier. The liquid composition comprises from about 0.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: October 24, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Donald M. Swartley
  • Patent number: 5445747
    Abstract: Fabric softening compositions comprising fabric softening active(s), preferably cationic and/or nonionic fabric softening actives; cellulase; and an effective amount of perfume comprising certain selected ingredients and being substantially free of other specific perfume ingredients, to cover an off-odor that occurs on fabric treated with said softening compositions. The compositions preferably have a low pH and can also contain free radical scavenging antioxidant material and/or chelant to stabilize the cellulase.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: August 29, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Lisa L. Kvietok, Toan Trinh, Judith A. Hollingshead
  • Patent number: 5429628
    Abstract: The present invention relates to compositions and articles such as catamenials, diapers, pantiliners, paper towels, tissues, underarm shields, etc., which minimize odor caused from body fluids through the incorporation of an effective amount of cyclodextrin, having a particle size of less than 12 microns. Combinations of small particle size cyclodextrins with other odor-controlling materials are also disclosed.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 4, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Dean V. Phan
  • Patent number: 5427696
    Abstract: Biodegradable chemical softening compositions are provided comprising a mixture of a quaternized ester-amine compound and a polyhydroxy compound. Preferred biodegradable quaternized ester-amine compounds include diester dialkyl dimethyl ammonium salts such as diester ditallow dimethyl ammonium chloride, diester di(touch hydrogenated)tallow dimethyl ammonium chloride and diester di(hydrogenated)tallow dimethyl ammonium chloride. Preferred polyhydroxy compounds are selected from the group consisting of glycerol, and polyethylene glycols and polypropylene glycols having a weight average molecular weight from about 200 to 4000.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: June 27, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Dean V. Phan, Paul D. Trokhan, Toan Trinh
  • Patent number: 5405542
    Abstract: Rinse-added fabric conditioning compositions containing cationic soil release polymers are much more effective than similar compositions containing nonionic soil release polymers for soil release. Most of the cationic soil release polymers are new compounds comprising a hydrophobic alkylene oxide/terephthalate portion which has a low molecular weight and at least a single cationic charge under use conditions.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: April 11, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Eugene P. Gosselink, Frederick E. Hardy
  • Patent number: 5399272
    Abstract: The present invention relates to clear or translucent, rinse-added fabric softening compositions comprising from about 20% to about 80% biodegradable softener active, from about 2% to about 25% C.sub.8 -C.sub.22 mono-alkyl cationic quaternary ammonium compound dispersibility aid, and from about 17% to about 75% non-aqueous organic solvent, wherein the fatty acyl groups of the biodegradable softener active have an average Iodine Value of at least about 50. Preferably the compositions have a viscosity of from about 15 cps to about 500 cps when diluted with from about 1:1 to about 1:5, softening composition to water.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: March 21, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Donald M. Swartley, Toan Trinh, Errol H. Wahl, Garry M. Huysse
  • Patent number: 5384186
    Abstract: Cyclodextrin complex is suspended in polyalkylene glycol carrier material that does not displace the included material. The preferred perfume/cyclodextrin complexes, either alone or admixed with solvent (e.g., water), are preferably suspended in the carrier and then incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. The perfume complexes provide fabrics with perfume benefits when they are rewetted after drying. Volatile perfume materials, including those materials that are commonly associated with "freshness" can be applied to the fabrics in an effective way.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: January 24, 1995
    Assignee: The Proctor & Gamble Company
    Inventor: Toan Trinh
  • Patent number: 5348667
    Abstract: Cyclodextrin complexes are prepared utilizing processes in which the cyclodextrin/active complex is prepared under concentrated reaction conditions in which there is no more than about 40% solvent, e.g., water, with mechanical working, to provide a complex ultimate particle size of less than about 12 microns and the resulting complex reaction mixture is incorporated, preferably without further operation, into at least one fabric conditioning material, preferably cationic fabric conditioning active, preferably in liquid (molten) form, preferably at a temperature between about 60 and about 95.degree. C., and mechanically worked to reduce complex aggregate particle size below about 200 microns. The resulting complex/fabric conditioning material mixture is used to prepare, e.g., dryer-added fabric softener article, e.g., sheet. The mixture of complex and fabric softener material preferably contains a small amount of an anionic surfactant to help avoid deposition of, e.g.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: September 20, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Dennis R. Bacon, Thomas A. Borcher, Sr., Alessandro Corona, III, Clyde D. Palmer, Toan Trinh
  • Patent number: 5312522
    Abstract: Fibrous cellulose materials useful in the manufacture of soft, absorbent paper products such as paper towels, facial tissues, and toilet tissue are disclosed. The paper products contain a biodegradable chemical softening composition comprising a mixture of a biodegradable quaternized ester-amine compound and a polyhydroxy compound. Preferred biodegradable quaternized ester-amine compounds include diester dialkyldimethylammonium salts such as the diester ditallow dimethyl ammonium chloride, diester di(touch hydrogenated) tallow dimethyl ammonium chloride and diester di(hydrogenated) tallow dimethyl ammonium chloride. Preferred polyhydroxy compounds are selected from the group consisting of glycerol, and polyethylene glycols and polypropylene glycols having a weight average molecular weight from about 200 to 4000.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: May 17, 1994
    Assignee: Procter & Gamble Company
    Inventors: Dean Van Phan, Paul D. Trokhan, Toan Trinh
  • Patent number: 5246611
    Abstract: Cyclodextrin complex is suspended in polyalkylene glycol carrier material that does not displace the included material. The preferred perfume/cyclodextrin complexes, either alone or admixed with solvent (e.g., water), are preferably suspended in the carrier and then incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. The perfume complexes provide fabrics with perfume benefits when they are rewetted after drying. Volatile perfume materials, including those materials that are commonly associated with "freshness" can be applied to the fabrics in an effective way.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: September 21, 1993
    Assignee: The Procter & Gamble Company
    Inventor: Toan Trinh
  • Patent number: 5236615
    Abstract: Fabric softening compositions, preferably in liquid form, for use in the rinse cycle of home laundry operations are improved by: (a) using certain protected water sensitive materials, especially particulate complexes of cyclodextrins and perfumes, which are protected in fabric softening compositions and/or detergent compositions, by e.g.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: August 17, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Dennis R. Bacon
  • Patent number: 5234611
    Abstract: Fabric softening compositions, preferably in liquid form, for use in the rinse cycle of home laundry operations are improved by: (a) using certain protected water sensitive materials, especially particulate complexes of cyclodextrins and perfumes, which are protected in fabric softening compositions and/or detergent compositions, by e.g.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: August 10, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Dennis R. Bacon, Fernando Benvegnu
  • Patent number: 5234610
    Abstract: An effective amount of perfume/cyclodextrin complex is applied to fabric that is preferably at least partially wetted. A preferred method applies said complex to said fabric in an automatic laundry dryer. The perfume/cyclodextrin complexes are preferably incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. The complexes provide fabrics with perfume benefits when they are rewetted after drying. Volatile perfume materials, including those materials that are commonly associated with "freshness" can be applied to the fabrics in an effective way. Clay provides protection for said perfume/cyclodextrin complexes, especially when certain materials like some nonionic fabric softeners and/or fatty acids are present and in contact with said perfume/cyclodextrin complexes.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: August 10, 1993
    Assignee: The Procter & Gamble Company
    Inventors: John M. Gardlik, Toan Trinh, Todd J. Banks, Fernando Benvegnu
  • Patent number: 5232612
    Abstract: Fabric softening compositions, preferably in liquid form, for use in the rise cycle of home laundry operations are improved by: (a) using certain protected water sensitive materials, especially particulate complexes of cyclodextrins and perfumes, which are protected in fabric softening compositions and/or detergent compositions, by e.g.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: August 3, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Dennis R. Bacon
  • Patent number: 5232613
    Abstract: Fabric softening compositions, preferably in liquid form, for use in the rinse cycle of home laundry operations are improved by: (a) using certain protected water sensitive materials, especially particulate complexes of cyclodextrins and perfumes, which are protected in fabric softening compositions and/or detergent compositions, by e.g.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: August 3, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Dennis R. Bacon, Toan Trinh
  • Patent number: 5207933
    Abstract: Fabric softening compositions, preferably in liquid form, for use in the rinse cycle of home laundry operations are improved by: (a) using certain protected water sensitive materials, especially particulate complexes of cyclodextrins and perfumes, which are protected in fabric softening compositions and/or detergent compositions, by e.g.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: May 4, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Helen B. Tordil
  • Patent number: 5139687
    Abstract: Cyclodextrin complex is suspended in polyalkylene glycol carrier material that does not displace the included material. The preferred perfume/cyclodextrin complexes, either alone or admixed with solvent (e.g., water), are preferably suspended in the carrier and then incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. The perfume complexes provide fabrics with perfume benefits when they are rewetted after drying. Volatile perfume materials, including those materials that are commonly associated with "freshness" can be applied to the fabrics in an effective way.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: August 18, 1992
    Assignee: The Proctor & Gamble Company
    Inventors: Thomas A. Borgher, Sr., Clyde D. Palmer, Toan Trinh, Paul A. Wendland
  • Patent number: 5102564
    Abstract: An effective amount of perfume/cyclodextrin complex is applied to fabric that is preferably at least partially wetted. A preferred method applies said complex to said fabric in an automatic laundry dryer. The perfume/cyclodextrin complexes are preferably incorporated into solid, dryer-activated, fabric treatment (conditioning) compositions, preferably containing fabric softeners, more preferably cationic and/or nonionic fabric softeners. The complexes provide fabrics with perfume benefits when they are rewetted after drying. Volatile perfume materials including those materials that are commonly associated with "freshness" can be applied to the fabrics in an effective way. Clay provides protection for said perfume/cyclodextrin complexes, especially when certain materials like some nonionic fabric softeners and/or fatty acids are present and in contact with said perfume/cyclodextrin complexes.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: April 7, 1992
    Assignee: The Procter & Gamble Company
    Inventors: John M. Gardlik, Toan Trinh, Todd J. Banks, Fernando Benvegnu