Patents by Inventor John D. Copham

John D. Copham 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 making a slurry containing particulate matter and fibers for a preformed insulation product
    Patent number: 4325849
    Abstract: A method for making a slurry containing particulate matter and fibers for a preformed insulation product comprises mixing dry particulate matter with a binder which is a liquid containing dispersed fibers. An apparatus suitable for practicing the method comprises a means for disposing the particulate matter in the form of a falling curtain and a means for spraying the binder on the particulate matter.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: April 20, 1982
    Assignee: The Celotex Corporation
    Inventors: Murray Rosen, Alan R. Koenig, John D. Copham
  • Method for making a slurry containing particulate matter and fibers for a preformed insulation product
    Patent number: 4242241
    Abstract: A method for making a slurry containing particulate matter and fibers for a preformed insulation product comprises mixing dry particulate matter with a binder which is a liquid containing dispersed fibers. An apparatus suitable for practicing the method comprises a means for disposing the particulate matter in the form of a falling curtain and a means for spraying the binder on the particulate matter.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: December 30, 1980
    Assignee: The Celotex Corporation
    Inventors: Murray Rosen, Alan R. Koenig, John D. Copham
  • Fiber plus liquid spray means in tumbling drum
    Patent number: 4168919
    Abstract: A method for making a slurry containing particulate matter and fibers for a preformed insulation product comprises mixing dry particulate matter with a binder which is a liquid containing dispersed fibers. An apparatus suitable for practicing the method comprises a means for disposing the particulate matter in the form of a falling curtain and a means for spraying the binder on the particulate matter.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: September 25, 1979
    Assignee: The Celotex Corporation
    Inventors: Murray Rosen, Alan R. Koenig, John D. Copham