Patents by Inventor Alan L. Kempner

Alan L. Kempner 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 and process apparatus for separating gaseous phosphorus trichloride from a gas stream
    Patent number: 4319894
    Abstract: A process is provided for separating gaseous phosphorus trichloride from a gas stream. The process comprises contacting the gas stream with a condensing amount of liquid phosphorus trichloride to c ondense a portion of the gaseous phosphorus trichloride to liquid phosphorus trichloride. The liquid phsphorus trichloride is then separated from the gas stream. A process apparatus is also provided. The process is particularly useful in preventing or reducing the discharge of gaseous phosphorus trichloride to the atmosphere due to the accidental discharge of a high volume gas stream from a phosphorus trichloride reaction vessel.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: March 16, 1982
    Assignee: Stauffer Chemical Company
    Inventors: Alan L. Kempner, Robert H. Kaplan