Patents by Inventor Petrus Simon Admiraal

Petrus Simon Admiraal 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).

  • Device for liquefying gases
    Patent number: 4055961
    Abstract: A liquefactor includes a refrigeration stage for cooling a compressed gaseous body, and a first duct containing a first Joule-Thompson valve for connecting the refrigeration stage to a collecting container for use when the gaseous body comprises a single gas. A second duct parallelly connects the refrigeration stage to the collecting container and contains a second Joule-Thompson valve for use when the gaseous body comprises a mixture of two gases to be separated.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: November 1, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Petrus Simon Admiraal