Patents by Inventor John R. Castano

John R. Castano 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 determining the API gravity of oil by FID
    Patent number: 4248599
    Abstract: The API gravity of an oil is determined by vaporizing its volatile and pyrolyzable components, measuring the ratio of the amount vaporized within a range of relatively high temperatures to the total amount vaporized and determining that the gravity of the oil being tested equals that of an oil which has a similar composition and which, when a substantially equal amount is tested under substantially the same conditions, yields a similar ratio of amounts vaporized at the same temperatures.
    Type: Grant
    Filed: September 19, 1979
    Date of Patent: February 3, 1981
    Assignee: Shell Oil Company
    Inventors: Pierre R. Mommessin, John R. Castano, John G. Rankin, Mary L. Weiss