Patents by Inventor Navin G. Patel

Navin G. Patel 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).

  • Flame retardant polyamides
    Patent number: 5071894
    Abstract: A flame retardant polyamide composition including flame retardant effective amounts of (a) an iron compound and (b) a char forming thermoplastic polymer having aromatic groups in the backbone. A char stabilizing compound (c) may also be present. In a preferred embodiment (b) is a polyphenylene ether. In a preferred embodiment, (c) is anhydrous zinc borate or a wollastonite.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: December 10, 1991
    Assignee: Stamicarbon B.V.
    Inventors: Edward D. Weil, Navin G. Patel, Robert M. Leeuwendal
  • Flame retardant thermoplastic containing phospham
    Patent number: 4946885
    Abstract: A flame retardant thermoplastic containing an effective flame retardant amount of phospham. In additional embodiments, the thermoplastic has a processing temperature of above 200.degree. C., and may include one or more polymers selected from the group consisting of styrene-containing polymers, polyolefins and polyamides.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: August 7, 1990
    Assignee: Stamicarbon B.V.
    Inventors: Edward D. Weil, Navin G. Patel