Patents by Inventor Raymond Stephen Sigeti

Raymond Stephen Sigeti 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).

  • Fluid cylinder pressure check valve device
    Patent number: 5758681
    Abstract: The present invention relates to a fluid cylinder pressure check valve device, for use during the recharging of cylinders with fluid(s). In use, the invention is attached to a valve assembly of the cylinder so that when the valve assembly is opened, residual pressure within the cylinder may be determined to enable more efficient recharging. The invention also allows cylinders containing gas mixtures to be recharged to attain enhanced composition uniformity.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: June 2, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Thomas Edward DeBriae, John Notaro, Raymond Stephen Sigeti