Patents by Inventor Heinz Stephan

Heinz Stephan 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 making phosphorus pentasulfide
    Patent number: 4732745
    Abstract: Phosphorus pentasulfide is made. To this end gaseous nitrogen is introduced into the pipes feeding a reactor with a phosphorus melt and sulfur melt and/or into the outlet pipe for the phosphorus pentasulfide melt, the nitrogen being admitted under a pressure lower than the static pressure exerted in the pipes by the quantity of melt upstream of the gas inlets.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: March 22, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Herbert Diskowski, Heinz Stephan, Hermann Niermann
  • Air diffuser with modular core
    Patent number: 4020752
    Abstract: An air diffuser with a modular core is disclosed in which the diffuser comprises a fixed rectangular framework retaining a plurality of removeable rectangular core elements. The direction and volume of air distributed by the diffuser is selectively changed by adjusting the position of the circulation blades comprising the modular core elements and by altering the orientation of the elements. Each element is retained on two sides by the fixed framework and is secured to the framework by a spring clip located at a corner of the element.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: May 3, 1977
    Assignee: Lear Siegler, Inc.
    Inventor: Karl Heinz Stephan
  • Antrum punch forceps
    Patent number: D669177
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 16, 2012
    Assignee: Karl Storz GmbH & Co. KG
    Inventors: Paolo Castelnuovo, Karl-Heinz Stephan
  • Antrum punch forceps
    Patent number: D669178
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 16, 2012
    Assignee: Karl Storz GmbH & Co. KG
    Inventors: Paolo Catelnuovo, Karl-Heinz Stephan