Patents by Inventor Liang S. Tsaur

Liang S. Tsaur 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: 5589370
    Abstract: The present invention relates to an improved curing or hardening process for the continuous production of capsules containing a sensitive material. The process allows capsules to be formed continuously without aggregating. The process is also a contained system so that exposure to possibly harmful aerosols is avoided.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: December 31, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Florencio Ratuiste, Robert Ahart, David J. Lang, Liang S. Tsaur
  • Patent number: 5498378
    Abstract: This invention relates to wax capsules containing a structuring agent for encapsulation of an active material which is unstable in a liquid environment. The structuring agent is selected from the group of a hydrophobic silica, a hydrocarbon material and a molecular weight of about 50,000 to about 5,000,000 and an organophilic clay. The invention is especially useful for encapsulation of a surfactant. A process of making the capsules is also described.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: March 12, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Liang S. Tsaur, Michael Slayton, Michael P. Aronson
  • Patent number: 5476660
    Abstract: Compositions to deposit an active substance on a target surface (i.e. fabric, sun, hair, teeth). The active substance is left on the surface, after the product is rinsed off the surface. The preferred deposition is from compositions containing an anionic or nonionic active in the co-presence of an anionic surfactant. The compositions contain carrier particles having a zwitterionic or cationic surface and a plurality of outwardly protruding filaments containing charged organocarbyl groups. The active substance is contained within the carrier particles.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: December 19, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Ponisseril Somasundaran, Kavssery P. Ananthapadmanabhan, Mitsuko Fujiwara, Liang S. Tsaur
  • Patent number: 5441728
    Abstract: An aqueous hair treatment composition is provided that includes a water-soluble polymer having a solution viscosity at 10% in water of less than about 20,000 cps at 25.degree. C., and a latex of water-insoluble polymeric particles dispersed in water and having a glass transition temperature between 250 and 300.degree. K., the average particle size being no higher than about 3 microns. Preferably the latex particles are formed from respective monomers by emulsion polymerization.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: August 15, 1995
    Assignee: Chesebrough-Pond's USA Co., a division of Conopco, Inc.
    Inventors: Liang S. Tsaur, Michael P. Aronson, Frank Jones, G. Jae Lee
  • Patent number: 5441660
    Abstract: The present invention relates to liquid detergent compositions which contain capsules which capsules protect sensitive ingredients therein. The capsule, in addition to a protecting sensitive ingredients, contains an oil dispersion containing the active and a polymer shell surrounding the dispersion. The oil is defined by its ability to meet a tripartite definition and the shell is a water soluble or water dispersible polymer as defined.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: August 15, 1995
    Assignee: Lever Brothers Company
    Inventors: Liang S. Tsaur, Shiji Shen, Michael P. Aronson, David J. Pocalyko
  • Patent number: 5434069
    Abstract: The present invention relates to a novel capsule for protecting sensitive ingredients in detergent compositions. The capsule, in addition to a protected sensitive ingredient, contains an oil dispersion containing the active and a polymer shell surrounding the dispersion. The oil is defined by its ability to meet a tripartite definition and the shell is a water soluble or water dispersible polymer as defined.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: July 18, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Liang S. Tsaur, Shiji Shen, Michael P. Aronson, David J. Pocalyko
  • Patent number: 5429754
    Abstract: A fabric conditioning composition comprising a water soluble polymer having a hydrophilic backbone associated with an acidic group used to improve formulation and stability of such compositions.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: July 4, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Samuel Q. Lin, Liang S. Tsaur, Lucia V. Salas
  • Patent number: 5425887
    Abstract: A tumble dryer article comprising an effective amount of a fabric conditioning composition containing from about 60 to about 99 wt. % of a hydrocarbon based fabric conditioning componenta) an effective amount of a fabric conditioning composition having(i) from about 60 to about 99 wt. % of a hydrocarbon based fabric conditioning component; and(ii) 0.5 wt. % to 30 wt. % perfume capsules consisting essentially of a water soluble natural or modified natural or synthetic polymer and 1% to 70% perfume, the fabric conditioning composition having 10 wt. % or less free water when 0.5 wt. % to 10 wt. % perfume capsules are present and a free water to perfume capsules ratio of less than about 1 when more than 10 wt. % perfume particles are present; andb) dispensing means for dispensing the fabric conditioning composition onto fabrics in a tumble dryer.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: June 20, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Andrew C. Lam, Liang S. Tsaur, Samuel Q. Lin, Hifzur R. Ansari
  • Patent number: 5385959
    Abstract: The present invention relates to a capsule for use in heavy duty liquid compositions which capsule comprises:(1) a component subject to degradative attack; and(2) a composite polymer which in turn comprises a hydrophilic portion and hydrophobic polymer core particle.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: January 31, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Liang S. Tsaur, Michael P. Aronson
  • Patent number: 5281356
    Abstract: The present invention relates to heavy duty liquid compositions containing non-proteolytic enzyme or enzymes and comprising (a) a capsule which comprises a proteolytic enzyme and (b) a composite polymer which in turn comprises a hydrophilic portion and hydrophobic polymer core particles.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: January 25, 1994
    Assignee: Lever Brothers Company
    Inventors: Liang S. Tsaur, Michael P. Aronson, Leslie J. Morgan, John F. Hessel, Jack T. McCown, John L. Gormley
  • Patent number: 5281355
    Abstract: The present invention relates to a heavy duty liquid compositions comprising (a) a capsule comprising a component subject to degradative attach; and (b) a composite polymer which in turn comprises a hydrophilic portion and hydrophobic polymer core particles.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: January 25, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Liang S. Tsaur, Michael P. Aronson, Leslie J. Morgan, John F. Hessel, Jack T. McCown
  • Patent number: 5281357
    Abstract: The present invention relates to a protease containing heavy duty liquid composition comprising(a) a capsule which comprises a non-proteolytic enzyme; and(b) a composite polymer which in turn comprises a hydrophilic portion and hydrophobic polymer core particles.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: January 25, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Leslie J. Morgan, Michael P. Aronson, Liang S. Tsaur, John F. Hessel, Jack T. McCown
  • Patent number: 5246603
    Abstract: Composite microcapsules and a method of making the microcapsules, as well as a tumble drier article incorporating the microcapsules are described. The microcapsules comprise particles made of a emulsifiable mixture of a wax material and a fragrance oil which are embedded in a water soluble polymer. The microcapsules have a diameter of less than about 100 microns and are useful for incorporation in tumble drier articles to control the release of fragrance in the drier and prevent loss of fragrance during processing and storage.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: September 21, 1993
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Liang S. Tsaur, Samuel Lin