Patents by Inventor Rudolph Francis Janis

Rudolph Francis Janis 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).

  • Fibers flash-spun from blends of polyolefin polymers
    Patent number: 6004672
    Abstract: This invention is directed to a flash spun plexifilamentary strand material comprising blends of thermoplastic material including polyethylene and polypropylene, the resulting strand has a unique morphology comprising a three dimensional integral plexus of semicrystalline fibrous elements.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: December 21, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hyunkook Shin, James Ross Waggoner, Sam Louis Samuels, Michael Allen Bryner, Rudolph Francis Janis