Patents by Inventor Sivara Krishnai

Sivara Krishnai 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).

  • Thermoplastic moulding compositions based on polycarbonate, polyalkylene terephthalate and, optionally, one or more polymers
    Patent number: 4515918
    Abstract: Moulding compositions of polycarbonate, polyalkylene terephthalate and, optionally, polymer having a glass transition temperature below -20.degree. C. may be processed to form particularly low-distortion mouldings when the polycarbonate consists at least partly of o,o,o',o'-tetramethyl-besphenol-polycarbonate.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: May 7, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nouvertne, Volker Serini, Dieter Neuray, Rudolf Binsack, Hans-Georg Gehrke, Dieter Rempel, Sivara Krishnai