Patents by Inventor Arturo S. Cazares

Arturo S. Cazares 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).

  • Purification of pentachloronitrobenzene by distillation
    Patent number: 4842696
    Abstract: Pentachloronitrobenzene (PCNB) which initially contains in excess of 0.5% hexachlorobenzene (HCB) is purified by distilling the impure PCNB at a temperature between 100.degree.-250.degree. C. and a pressure below or at atmospheric pressure to obtain a PCNB product having a HCB content lower than 0.5%, and preferably lower than 0.1%.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: June 27, 1989
    Assignee: Quimica Organica De Mexico, S.A. De C.Y.
    Inventor: Arturo S. Cazares