Patents by Inventor Mark Jay Harper

Mark Jay Harper 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).

  • Fischer-tropsch process using sponge cobalt catalyst
    Publication number: 20030018088
    Abstract: A process is disclosed for the hydrogenation of carbon monoxide. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream, preferably comprising hydrocarbons. The catalyst used in the process is in the form of a sponge. The process is preferably adapted to produce hydrocarbons suitable for the production of diesel fuel. The catalyst used in the process includes at least one catalytic metal for Fischer-Tropsch reactions, preferably cobalt. Preferably the catalyst further includes at least one promoter suitable for the Fischer-Tropsch reaction, such as at least one element selected from among Groups 2-15 of the Periodic Table, preferably at lease one of chromium, iron, molybdenum, nickel, palladium, platinum, rhenium, rhodium, ruthenium, and combinations thereof.
    Type: Application
    Filed: February 28, 2002
    Publication date: January 23, 2003
    Applicant: CONOCO INC.
    Inventors: Ajoy P. Raje, Theodore A. Koch, Sourav Kumar Sengupta, Mark Jay Harper, Gloria I. Straguzzi, Hasan Dindi
  • Process for preparing 6-aminocaproamide
    Patent number: 6331624
    Abstract: A process for the production of 6-aminocaproamide comprising reacting 5-cyanovaleramide with hydrogen in the presence of a metal catalyst. The 6-aminocaproamide is useful, for example, in the production of caprolactam and nylon 6.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: December 18, 2001
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Theodore Augur Koch, Alan Martin Allgeier, Mark Jay Harper, Sourav Kumar Sengupta
  • Aminonitrile production
    Patent number: 6258745
    Abstract: Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and a cyanide compound.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: July 10, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Alex Sergey Ionkin, Stanislaw Bogdan Ziemecki, Theodore Augur Koch, Mark Jay Harper
  • Raney cobalt catalyst and a process for hydrogenating organic compounds using said catalyst
    Patent number: 6156694
    Abstract: The present invention relates to a Raney catalyst comprising iron, cobalt, a third metal wherein the third metal is selected from the group consisting of nickel, rhodium, ruthenium, palladium, platinum, osmium, iridium and mixtures of any of the metals of this group.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: December 5, 2000
    Assignee: E. I. Dupont De Nemours & Company
    Inventor: Mark Jay Harper
  • Raney iron catalyst and a process for hydrogenating organic compounds using said catalyst
    Patent number: 6087296
    Abstract: The present invention relates to a Raney catalyst comprising iron, cobalt, a third metal wherein the third metal is selected from the group consisting of nickel, rhodium, ruthenium, palladium, platinum, osmium, iridium and mixtures of any of these metals.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: July 11, 2000
    Assignee: E. I. du Pont de Nemours & Co.
    Inventor: Mark Jay Harper
  • Aminonitrile production
    Patent number: 5986127
    Abstract: A process for selectively hydrogenating a dinitrile to an aminonitrile is provided. The process comprises contacting a dinitrile with a hydrogen-containing fluid in the presence of a solvent comprising an alcohol or liquid ammonia, at least one metal catalyst, and a carbonyl group-containing additive such as, for example, organic amides, organic esters, salts of carboxylic acids or urea.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: November 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Alex Sergey Ionkin, Stanislaw Bogdan Ziemecki, Mark Jay Harper, Theodore Augur Koch