Patents by Inventor Jutta Cardinal

Jutta Cardinal 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).

  • Aramid fibers of high strength and high linear density, production thereof, and use thereof
    Patent number: 5698324
    Abstract: Fibers having a tenacity of more than 80 cn/tex and a filament linear density of more than 8 dtex which contain as the fiber-forming material an aromatic polyamide which is soluble in organic solvents and spinnable from isotropic spinning solutions. The fibers can be used for example as reinforcing materials, as heat-resistant insulator materials, for producing filter fabrics or as insulating materials.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: December 16, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Holger Jung, Jutta Cardinal, Werner Bruckner, Richard Neuert
  • Film of aromatic copolyamide from bis(aminophenoxy) benzene
    Patent number: 4981943
    Abstract: A film made from aromatic copolyamides of the dicarboxylic acid diamine type, whose shaping substance comprises certain recurring structural units and which has specific criteria regarding Staudinger index, tear strength, volume resistance, electrical dielectric strength, dimensional stability and water absorption, a process for its production, and the use of the film for the production of heat-resistant insulation material or as a substrate for flexible circuit boards.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: January 1, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Friedrich Herold, Gunther Keil, Werner Bruckner, Jutta Cardinal, Cynthia Bennett
  • Voluminous filament yarn
    Patent number: 3987614
    Abstract: Object of the invention is a voluminous filament yarn of three-dimensionally curled filaments without loops, coils or whorls having a positive value of residual crimp c.sub.3, with several loose filament ends sticking out and at least said ends having a flex abrasion resistance of less than about 1500 cycles. The obtained yarn excels in the uniformity of its characteristics all over the yarn length, its high crimp elongation and recovery from stretch and can be worked up to fabrics having an extremely low tendency to pilling.
    Type: Grant
    Filed: August 6, 1974
    Date of Patent: October 26, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jutta Cardinal, Karl Heinrich, Gunther Bauer