Patents by Inventor Edward J. Dzierza

Edward J. Dzierza 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 the manufacture of dialkyl disulfides
    Patent number: 5026915
    Abstract: A continuous process is disclosed for preparing dialkyl disulfides by reacting an alkyl alcohol and hydrogen sulfide in one reaction zone, and then passing the reactor effluent into a second reaction zone where it is reacted with elemental sulfur in the presence of a solid, particulate catalyst.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: June 25, 1991
    Assignee: Atochem North America, Inc.
    Inventors: Bernard Buchholz, Edward J. Dzierza, John R. Baltrus
  • Process for the manufacture of dialkyl disulfides and polysulfides
    Patent number: 4937385
    Abstract: A process is disclosed for continuously preparing dialkyl disulfides and dialkyl polysulfides by reacting at elevated temperature and in the presence of a solid, particulate catalyst an alkene and hydrogen sulfide in a first reaction zone, and then passing the reactor effluent into a second reaction zone where it is reacted at elevated temperature with molten, elemental sulfur in the presence of a solid, particulate catalyst.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: June 26, 1990
    Assignee: Pennwalt Corporation
    Inventors: Bernard Buchholz, Edward J. Dzierza, Robert B. Hager
  • Process for the manufacture of dialkyl sulfides
    Patent number: 4568767
    Abstract: A process is provided for the preparation of dialkyl sulfides by reacting alkenes and hydrogen sulfide at elevated temperature in the presence of a Type X, Y or L zeolite containing from about 5 to 15 percent by weight of alkali metal, expresed as Me.sub.2 O (where Me is an alkali metal).
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: February 4, 1986
    Assignee: Pennwalt Corporation
    Inventors: Edward J. Dzierza, Bernard Buchholz
  • Process for the manufacture of dimethyl sulfide
    Patent number: 4302605
    Abstract: A process is provided for preparing dialkyl sulfides by reacting alkanols and hydrogen sulfide in the presence of a zeolite catalyst that contains a reduced amount of alkali metal cations.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: November 24, 1981
    Assignee: Pennwalt Corporation
    Inventors: Bernard Buchholz, Edward J. Dzierza