Patents by Inventor Mohamed W. Hisham

Mohamed W. Hisham 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).

  • Process for making phosphorus halides and oxyhalides
    Patent number: 6685904
    Abstract: Disclosed is a process for producing phosphorous trichloride, phosphorous pentachloride, or phosphorous tribromide by reacting phosphine gas with chlorine gas or bromine gas, in a mixture with hydrogen gas. The phosphine is dried and the reaction is performed at a temperature up to about 250° C. The phosphorous trichloride or phosphorous tribromide product can be reacted with oxygen to form phosphorous oxychloride or phosphorous oxybromide, respectively.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: February 3, 2004
    Assignee: Occicdental Chemical Corporation
    Inventors: Harry E. Buckholtz, Mohamed W. Hisham