Patents by Inventor Petrus Simons

Petrus Simons 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).

  • Cleaning composition
    Patent number: 5861364
    Abstract: Cleaning composition comprising 65-90% by weight of an aliphatic hydrocarbon solvent, 10-30% by weight of a monohydric aliphatic alcohol containing 8-16 carbon atoms and 0.01-5% by weight of emulsifier, which composition has a flash point of more than 80 C., contains at most 1% by weight of aromatic hydrocarbons and in which composition the weight ratio of amount of component a) to amount of component b) is between 99:1 to 50:50. The cleaning composition is especially suitable for removing ink.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: January 19, 1999
    Assignee: Shell Oil Company
    Inventors: Nicolaas Cornelis Maria Beers, Lucas Petrus Simon Keyzer
  • 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