Patent 5000875 Issued on March 19, 1991. Estimated Expiration Date: February 2, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
252/511, Resin, rubber, or derivative thereof containing252/62.3T, Thermoelectric252/516, Carbide containing252/519.33, The organic compound is a polymer523/137, Electromagnetic wave absorbing composition or process of preparing (excludes visible, IR or UV portions of spectrum)524/431, Transition metal atom (i.e., Fe,Co,Ni)524/432, Group IIB metal atom (i.e., Zn or Cd)524/433, Group IIA metal atom (i.e., Be, Mg, Ca, Sr, Ba)524/437, Aluminum DNRM524/443, Atom other than Si, O, H, Al, Fe, or a Group IA or IIA metal atom DNRM, e.g., slag, mineral wool, etc.524/495, Mixing with carbon, e.g., graphite, etc., having numerical limitations, other than amount, e.g., included herein are particle size, surface area, etc., or composition or product thereof, DNRM524/496Carbon particle having specified dimension
Tetrafluoroethylene copolymer compositions containing conductive carbon black, graphite fiber or thermally conductive fillers have significantly increased conductivity when the tetrafluoroethylene copolymer has been treated with a fluorinating agent.
February 2, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
