Patents by Inventor Robert J. Heffner

Robert J. Heffner 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).

  • Cleaning compositions containing a cationic surfactant
    Patent number: 6156712
    Abstract: A new class of cationic surfactants are described, wherein these cationic surfactants are an ethoxylated alkyamidoalkyldialkylammonium salt and/or an ethoxylated trialkyl ammonium salt.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: December 5, 2000
    Assignee: Colgate Palmolive Company
    Inventors: Orum D. Stringer, Robert J. Heffner, Clarence Robbins, Barbara Thomas, Philip Gorlin
  • Cleaning compositions
    Patent number: 5929024
    Abstract: A new class of cationic surfactants are described, wherein these cationic surfactants are an ethoxylated alkyamidoalkyldialkylammonium salt and/or an ethoxylated trialkyl ammonium salt.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: July 27, 1999
    Assignee: Colgate Palmolive Company
    Inventors: Orum D. Stringer, Robert J. Heffner, Clarence Robbins, Barbara Thomas, Philip Gorlin
  • Dioxirane compounds useful for bleaching fabrics
    Patent number: 5525121
    Abstract: Bleaching compositions comprising an inorganic peroxygen compound and a bicyclic or tricyclic diketone as an activator for the peroxygen compound. The composition preferably comprises about 1 to about 75% of the peroxygen bleaching compound and about 1 to about 75% of the bicyclic or tricyclic diketone bleaching compound activator. The conventional additives such as surfactants, antifoaming agents, fabric softeners, stabilizers, inorganic builder salts, buffers, enzymes and the like may be present as indicated. The compositions can be formulated as dry concentrated, aqueous solutions, aqueous solutions containing non-aqueous solvents, etc. The compositions are environmentally safe, effective as bleaching agents from below room temperature to higher temperatures, biodegradable and otherwise highly desirable.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: June 11, 1996
    Assignee: Colgate-Palmolive Company
    Inventors: Robert J. Heffner, Robert J. Steltenkamp
  • Peroxygen bleach composition activated by bi and tricyclic diketones
    Patent number: 5437686
    Abstract: Bleaching compositions comprising an inorganic peroxygen compound and a bicyclic or tricyclic diketone as an activator for the peroxygen compound. The composition preferably comprises about 1 to about 75% of the peroxygen bleaching compound and about 1 to about 75% of the bicyclic or tricyclic diketone bleaching compound activator. The conventional additives such as surfactants, antifoaming agents, fabric softeners, stablizers, inorganic builder salts, buffers, enzymes and the like may be present as indicated. The compositions can be formulated as dry concentrated, aqueous solutions, aqueous solutions containing non-aqueous solvents, etc. The compositions are environmentally safe, effective as bleaching agents from below room temperature to higher temperatures, biodegradable and otherwise highly desirable.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: August 1, 1995
    Assignee: Colgate-Palmolive Co.
    Inventors: Robert J. Heffner, Robert J. Steltenkamp
  • Method for synthesizing N-aminophthalimide
    Patent number: 4720553
    Abstract: There is described an improved method for synthesizing N-aminophthalimide from phthalimide and hydrazine wherein the reaction is conducted in a medium consisting essentially of water and alcohol at a volume ratio within the range of from 80:20 to 20:80 at a temperature within the range of from -5.degree. C. to 35.degree. C., said alcohol being methanol, ethanol, n-propanol, iso-propanol or a mixture thereof.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: January 19, 1988
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: George E. Lee, Robert J. Heffner