Patents by Inventor Keith D. Perring

Keith D. Perring 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: 6475473
    Abstract: A perfume composition contains at least 15% by weight one or more defined aldehydes, and at least 30% by weight of at least one of five defined categories of hydroxylic materials, ketones, ethers, esters and nitriles. The perfume composition exhibits a deodorant effect, is particularly good at reducing sulphurous malodors, and is suitable for use in deodorant products, personal products and laundry treatment products.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: November 5, 2002
    Assignee: Quest International B.V.
    Inventors: Keith D. Perring, Philip W. Goulding, John M. Behan
  • Patent number: 6172037
    Abstract: A perfume fixative consisting essentially of polyvinylpyrrolidone, hydroxy propyl cellulose and hydrophobic oil. The perfume fixative is being incorporated in a perfume-containing formulation or product. The fixative is found to be effective in enhancing perfume life, even when utilized at low levels.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: January 9, 2001
    Assignee: Quest International B.V.
    Inventors: Keith D. Perring, Pamela V. Irving, Jeremy N. Ness, Kathleen M. Tuck
  • Patent number: 5554588
    Abstract: A perfume composition contains at least 50% by weight of materials which fall into five categories defined by structure, and molecular weight. Amounts of material within each category fall within specified ranges of percentage of the whole composition. Two categories, ethers and salicylates, must be present. At least two of the remaining three categories, which are alcohols, acetate/propionate esters and methyl aryl ketones, must also be present.The compositions enable good levels of deodorant activity to be achieved along with consumer-acceptable fragrance.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: September 10, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: John M. Behan, Christopher F. Clements, David C. Hooper, John R. Martin, James B. Melville, Keith D. Perring
  • Patent number: 5500223
    Abstract: An encapsulation process employs an aqueous dispersion of silica having a particle size not substantially greater than 100 nm. An emulsion is formed by high shear mixing of the silica dispersion with the material to be encapsulated and the emulsion is gelled. The process allows hydrophobic materials to be encapsulated in structures which have a high loading of the material and a good degree of imperviousness in the presence of other materials such as surfactants and mineral oils. Using the process, hydrophobic materials such as flavours, fragrances and cosmetic ingredients can be encapsulated for delayed release in a wide variety of products.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: March 19, 1996
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring
  • Patent number: 5482635
    Abstract: A fabric conditioning product which may be used during the rinsing or tumble drying of fabrics after washing, contains a perfume composition which contains specified ketones and salicylates. The perfumes inhibit development of human body malodour on the fabrics when worn and the combination of specified materials makes it possible to avoid inclusion of individual components with powerful, unacceptable odors.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: January 9, 1996
    Assignee: Lever Brothers Company
    Inventors: John M. Behan, Christopher F. Clements, John R. Martin, Keith D. Perring
  • Patent number: 5334581
    Abstract: The invention concerns a process for incorporating a perfume into a personal product, wherein the perfume is first combined with one or more non-ionic emulsifiers and an aqueous phase to form a structured emulsion containing liquid crystal structures, which surround the dispersed perfume, and thereafter this structured emulsion is dispersed into a personal product base. The invention also concerns the personal products thus obtained and the structured emulsions used in the process. The structured emulsions comprise 1-30 % by weight of one or more non-ionic emulsifiers, 1-50% by weight of a perfume and 20-98% by weight of an aqueous phase. Preferably low shear mixing is used in preparing the emulsions.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: August 2, 1994
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring, William M. Smith
  • Patent number: 5288423
    Abstract: The invention concerns a process for incorporating a perfume into a detergent product, wherein the perfume is first combined with one or more non-ionic emulsifiers and an aqueous phase to form a structured emulsion containing liquid crystal structures, which surround the dispersed perfume, and thereafter this structured emulsion is dispersed into a detergent composition. The invention also concerns the detergent products thus obtained. The structured emulsion comprises 1-30% by weight of non-ionic emulsifiers, 1-50% by weight of a perfume and 20-98% by weight of an aqueous phase. The detergent product comprises at least 4% by weight of surfactant.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: February 22, 1994
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring, William M. Smith
  • Patent number: 5246918
    Abstract: The invention concerns a process for incorporating a perfume into a personal product, wherein the perfume is first combined with one or more non-ionic emulsifiers and an aqueous phase to form a structured emulsion containing liquid crystal structures, which surround the dispersed perfume, and thereafter this structured emulsion is dispersed into a personal product base. The invention also concerns the personal products thus obtained and the structured emulsions used in the process. The structured emulsions comprise 1-30% by weight of one or more non-ionic emulsifiers, 1-50% by weight of a perfume and 20-98% by weight of an aqueous phase. Preferably low shear mixing is used in preparing the emulsions.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: September 21, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring, William M. Smith
  • Patent number: 5204023
    Abstract: The invention concerns a method of reducing the organoleptic effect of undesirable aldehydic components in a triglyceride or derivative thereof by addition of a reaction product of an amine and an organoleptically acceptable aldehyde. The triglyceride may be a food or food component such as an edible fat or a surface active agent such as a detergent. The reaction product may be incorporated in the perfume or flavor to be added to the triglyceride or derivative thereof without distorting their organoleptic effect.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: April 20, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Keith D. Perring
  • Patent number: 5190915
    Abstract: The invention concerns a process for incorporating a perfume into a personal product, wherein the perfume is first combined with one or more non-ionic emulsifiers and an aqueous phase to form a structured emulsion containing liquid crystal structures, which surround the dispersed perfume, and thereafter this structured emulsion is dispersed into a personal product base. The invention also concerns the personal products thus obtained and the structured emulsions used in the process. The structured emulsions comprise 1-30% by weight of one or more non-ionic emulsifiers, 1-50% by weight of a perfume and 20-98% by weight of an aqueous phase. Preferably low shear mixing is used in preparing the emulsions.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: March 2, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring, William M. Smith
  • Patent number: 5185155
    Abstract: An encapsulation process employs an aqueous dispersion of silica having a particle size not substantially greater than 100 nm. An emulsion is formed by high shear mixing of the silica dispersion with the material to be encapsulated and the emulsion is gelled. The process allows hydrophobic materials to be encapsulated in structures which have a high loading of the material and a good degree of imperviousness in the presence of other materials such as surfactants and mineral oils. Using the process, hydrophobic materials such as flavors, fragrances and cosmetic ingredients can be encapsulated for delayed release in a wide variety of products.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: February 9, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring
  • Patent number: 5156766
    Abstract: The invention concerns emulsions based on non-ionic emulsifiers, with improved stability achieved by the addition of selected perfumery materials, and a process for preparing such emulsions. The emulsions comprise 1-30% by weight of one or more non-ionic emulsifiers 30-98% of an aqueous phase and 0.01-50% of hydrophobic materials. The stabilizing perfumery materials are present in 0.5-25% by weight based on the non-ionic emulsifiers. The emulsions are preferably prepared under low shear.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: October 20, 1992
    Assignee: Unilever Patent Holdings, B.V.
    Inventors: John M. Behan, Jeremy N. Ness, Keith D. Perring, William M. Smith
  • Patent number: 5078904
    Abstract: The invention relates to perfumed fabric softening compositions wherein the perfume is encapsulated in micro-organism cells. Preferred micro-organisms for this purpose are yeasts, especially Saccharomyces cerevisiae, and filamentous fungi. The micro-organism cells preferably contain at least 15% w/w of perfume.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: January 7, 1992
    Assignee: Unilever Patent Holdings B.V.
    Inventors: John M. Behan, Keith D. Perring