Patents by Inventor James J. Franz

James J. Franz 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).

  • Porous pipe and process for producing same
    Patent number: 5660209
    Abstract: A process for producing a porous pipe is disclosed and comprises forming an extrudable mixture comprising elastomer particles, binder component and a solid water carrier component having a composition other than the elastomer particles and the binder component and being associated with sufficient water to provide porosity to a porous pipe produced from the mixture; and extruding the extrudable mixture to conditions effective to form the porous pipe.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: August 26, 1997
    Assignee: Subsurface Technology Corp.
    Inventors: James J. Franz, Richard A. Hutchinson
  • Porous pipe and process for producing same
    Patent number: 5462092
    Abstract: A process for producing a porous pipe is disclosed and comprises forming an extrudable mixture comprising elastomer particles, binder component and a solid water carrier component having a composition other than the elastomer particles and the binder component and being associated with sufficient water to provide porosity to a porous pipe produced from the mixture; and extruding the extrudable mixture to conditions effective to form the porous pipe.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: October 31, 1995
    Assignee: Subsurface Technology Corporation
    Inventors: James J. Franz, Richard A. Hutchinson
  • Method of forming porous pipe using a blowing agent carrier component
    Patent number: 5334336
    Abstract: A process for producing a porous pipe is disclosed and includes forming an extrudable mixture comprising elastomer particles, binder component and a solid water carrier component having a composition other than the elastomer particles and the binder component and being associated with sufficient water to provide porosity to a porous pipe produced from the mixture; and extruding the extrudable mixture to conditions effective to form the porous pipe.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: August 2, 1994
    Assignee: Subsurface Technology Corporation
    Inventors: James J. Franz, Richard A. Hutchinson