Patents by Inventor Sudhakar Puvvada

Sudhakar Puvvada 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).

  • Handwash compositions
    Patent number: 6117828
    Abstract: The invention discloses handwash or personal wash shampoo compositions comprising surfactant(s), cationic wheat protein and an antibacterial agent. The cationic wheat protein provides enhanced skin feel relative to other proteins.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: September 12, 2000
    Assignee: Unilever Home & Personal Care USA
    Inventors: Sudhakar Puvvada, Michael Slayton
  • Liquid cleansing composition comprising soluble, lamellar phase inducing structurant
    Patent number: 6077816
    Abstract: The present invention relates to lamellar phase compositions comprising dned surfactant systems and a structurant selected from the group consisting of liquid fatty acids liquid alcohols and derivatives thereof which structurant is responsible for inducing the lamellar phrase.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: June 20, 2000
    Assignee: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Sudhakar Puvvada, Virgilio Barba Villa, Richard Kolodziej
  • Stable liquid composition comprising high levels of emollients
    Patent number: 5965500
    Abstract: The present invention provides high foaming aqueous liquid compositions with levels of oil/emollient equal to or in excess of level of surfactant. It is surprising that good levels of foam can be maintained at such high levels of emollient. In addition to surfactant and emollient, compositions also preferably comprise C.sub.12 -C.sub.24 fatty acid and/or cationic polymer.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: October 12, 1999
    Assignee: Levers Brothers Company, Division of Conopco, Inc.
    Inventor: Sudhakar Puvvada
  • Method of enhancing low temperature stability of liquid cleansing compositions
    Patent number: 5962395
    Abstract: The present invention relates to a method of enhancing low temperature stability of lamellar structured liquid cleansing compositions comprising 5% to 50% of a surfactant system comprising (a) anionic or mixture of anionics and (b) an amphoteric and/or zwifterionic surfactant, wherein said method comprises selecting component (b) such that alkalimetal alkylamphoacetate comprises greater than 25% to 90% of said component (b).
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: October 5, 1999
    Assignee: Lever Brothers Company
    Inventors: Sudhakar Puvvada, Richard Kolodziej, May Shana'a
  • Liquid cleansing composition comprising soluble, lamellar phase inducing structurant and method thereof
    Patent number: 5952286
    Abstract: The present invention relates to lamellar phase compositions comprising defined surfactant systems and a structurant selected from the group consisting of liquid fatty acids liquid alcohols and derivatives thereof which structurant is responsible for inducing the lamellar phrase. The invention also relates to a method of inducing said lamellar phase in such compositions by adding the defined structurant.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: September 14, 1999
    Assignee: Lever Brothers Company
    Inventors: Sudhakar Puvvada, Virgilio Villa, Richard Kolodziej
  • Cleansing composition with separately dispensed cleansing base and benefit base wherein benefit base also comprises surfactant
    Patent number: 5929019
    Abstract: An aqueous liquid cleansing and moisturizing composition comprising a base formulation and an additive formulation in which the base formulation and additive formulation are separate but combinedly dispensable from a single packaging means in a predetermined ratio as discrete domains. By adding some surfactant to additive formulation stripe, enhanced lather is obtained. Further, some surfactant is assured, even if there is uneven pumping. Finally, greater consumer control of surfactant of moisturizer levels is afforded.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: July 27, 1999
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Sudhakar Puvvada, May Shana'a