Patents by Inventor Helga Krevald

Helga Krevald 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).

  • Method for the preparation of antiperspirant compositions having enhanced efficacy
    Patent number: 4732754
    Abstract: Improved antiperspirant compositions having an astringent material suspended in a hydrophobic medium, and emulsions of aqueous solutions of astringent materials in a hydrophobic medium, said compositions having added thereto from 1 to 5% by weight of a C.sub.3 to C.sub.8 alkanediol compound.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: March 22, 1988
    Assignee: American Cyanamid Company
    Inventor: Helga Krevald
  • Method for the preparation of water-in-oil emulsion antiperspirants
    Patent number: 4725431
    Abstract: Method for preparing an antiperspirant composition of the water-in-oil emulsion type having improved application and aesthetic properties which comprises emulsyfing the aqueous phase in the oil phase in the presence of about 1 to 3% by weight of at least one C.sub.12 to C.sub.20 saturated fatty acid ester of polyglycerol containing about 2 to 10 repeating glycerol units.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: February 16, 1988
    Assignee: American Cyanamid Company
    Inventors: Joseph C. Hourihan, Helga Krevald
  • Suspension type antiperspirant stick
    Patent number: 4722836
    Abstract: Wax-like antiperspirant composition sticks having uniformly distributed astringent salt suspension throughout the stick composition.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: February 2, 1988
    Assignee: American Cyanamid Company
    Inventors: Daniel C. Geary, Helga Krevald, Peter P. Walters, Jr.
  • Method for the preparation of water-in-oil emulsion antiperspirants
    Patent number: 4719103
    Abstract: Method for making an antiperspirant composition of the water-in-oil emulsion type having improved application properties and aesthetic appeal which comprises emulsifying the aqueous phase in the oil phase in the presence of from 1 to 3% by weight of a non-ionic surfactant having a resultant HLB value in the range of 6 to 9.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: January 12, 1988
    Assignee: American Cyanamid Company
    Inventors: Helga Krevald, Joseph C. Hourihan
  • Water-in-oil emulsion antiperspirant stick
    Patent number: 4704271
    Abstract: Antiperspirant compositions containing an aqueous solution of an astringent compound as a discontinuous or dispersed phase in a solid matrix of a volatile silicone, a solid alkanol containing at least 12 carbon atoms, a C.sub.4 to C.sub.8 alkylene diol, and a saturated C.sub.12 to C.sub.20 fatty acid ester of at least one polyglycerol emulsifying agent having a resultant HLB value of 6 to 9. The compositions may also contain an alkanoic acid having at least 12 carbon atoms.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: November 3, 1987
    Assignee: American Cyanamid Company
    Inventors: Joseph C. Hourihan, Helga Krevald
  • Wax-like antiperspirant stick compositions
    Patent number: 4151272
    Abstract: Wax-like compositions useful for antiperspirant or deodorant sticks, generally hydrophobic in nature, which contain ingredients having a high hydrophile-lipophile balance to improve the efficacy of such compositions.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: April 24, 1979
    Assignee: American Cyanamid Company
    Inventors: Daniel C. Geary, Helga Krevald
  • Process for the manufacture of a cosmetic or pharmaceutical stick
    Patent number: 4069574
    Abstract: A process for manufacturing a wax-like cosmetic stick product having an improved contour on its upper surface, by filling at the open bottom with the stick material in a molten state, the case having a cap which provides the contour, allowing the stick to solidify, and placing a push-up device in the bottom of the case.
    Type: Grant
    Filed: October 15, 1976
    Date of Patent: January 24, 1978
    Assignee: American Cyanamid Company
    Inventors: Helga Krevald, Donald Patrick Johnson, Keith Woodruff