Patents by Inventor Joseph P. Nirschl

Joseph P. Nirschl 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).

  • Process for making imidazolinium salts
    Patent number: 4233451
    Abstract: A process for making quaternary imidazolinium fabric conditioning agents essentially free of amines, amine salts and alkoxylated forms of the quaternary imidazolinium salts. An aqueous liquid fabric conditioning composition containing quaternary imidazolinium conditioning agents essentially free of amines and amine salts possesses desirable stability and conditioning properties.
    Type: Grant
    Filed: October 20, 1978
    Date of Patent: November 11, 1980
    Assignee: The Procter & Gamble Company
    Inventors: Hans J. Pracht, Joseph P. Nirschl
  • Process for making imidazolinium salts, fabric conditioning compositions and methods
    Patent number: 4127489
    Abstract: A process for making quaternary imidazolinium fabric conditioning agents essentially free of amines, amine salts and alkoxylated forms of the quaternary imidazolinium salts. An aqueous liquid fabric conditioning composition containing quaternary imidazolinium conditioning agents essentially free of amines and amine salts possesses desirable stability and conditioning properties.
    Type: Grant
    Filed: July 27, 1976
    Date of Patent: November 28, 1978
    Assignee: The Procter & Gamble Company
    Inventors: Hans J. Pracht, Joseph P. Nirschl
  • Clay-containing fabric softening detergent compositions
    Patent number: 4062647
    Abstract: Granular, built laundry detergent compositions containing particular smectite clay minerals. Compositions containing such clays provide softening and/or antistatic benefits to fabrics washed therein.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: December 13, 1977
    Assignee: The Procter & Gamble Company
    Inventors: Thomas D. Storm, Joseph P. Nirschl
  • Fabric conditioning compositions
    Patent number: 4045361
    Abstract: Aqueous liquid rinse-added fabric conditioning compositions comprising diamine static control agents, quaternary ammonium fabric softeners and, optionally, particulate sorbitan ester material provide fabric softening and exceptional fabric static control.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: August 30, 1977
    Assignee: The Procter & Gamble Company
    Inventors: David M. Watt, Jr., Joseph P. Nirschl
  • Concrete additive
    Patent number: 3951674
    Abstract: Cementitious concrete compositions with improved compressive strength comprising a cellulose acetate sulfate set-retarding compressive strength increasing agent are provided.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: April 20, 1976
    Assignee: The Procter & Gamble Company
    Inventors: John D. Curry, Francis L. Diehl, Joseph P. Nirschl