Patents by Inventor Carl F. Bertsch

Carl F. Bertsch 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).

  • Excitatory amino acid receptor antagonists
    Patent number: 5675008
    Abstract: This invention provides novel decahydroisoquinoline compounds which are useful as excitatory amino acid receptor antagonists and in the treatment of neurological disorders. This invention also provides synthetic methods for preparing decahydroisoquinolines, as well as, novel intermediates in the synthesis thereof.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: October 7, 1997
    Assignee: Eli Lilly and Company
    Inventors: Carl F. Bertsch, Bret Huff, Michael J. Martinelli, Paul L. Ornstein
  • Process for preparing isoquinoline compounds
    Patent number: 5648492
    Abstract: This invention provides novel decahydroisoquinoline compounds which are useful as excitatory amino acid receptor antagonists and in the treatment of neurological disorders. This invention also provides synthetic methods for preparing decahydroisoquinolines, as well as, novel intermediates in the synthesis thereof.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: July 15, 1997
    Assignee: Eli Lilly and Company
    Inventors: M. Brian Arnold, Carl F. Bertsch, Marvin M. Hansen, Allen R. Harkness, Bret Huff, Michael J. Martinelli, Paul L. Ornstein
  • Process of preparing isoquinoline compounds
    Patent number: 5637712
    Abstract: This invention provides novel decahydroisoquinoline compounds which are useful as excitatory amino acid receptor antagonists and in the treatment of neurological disorders. This invention also provides synthetic methods for preparing decahydroisoquinolines, as well as, novel intermediates in the synthesis thereof.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: June 10, 1997
    Assignee: Eli Lilly and Company
    Inventors: Carl F. Bertsch, Bret Huff, Michael J. Martinelli
  • Method for passivating cracking catalyst
    Patent number: 4666584
    Abstract: A method and apparatus for passivating the adverse catalytic effects of metal contaminated hydrocarbon feedstocks is described. The method is directed at the use of control means to regulate the residence time of the catalyst in the passivation zone and to regulate the reducing gas flow rate to the passivation zone.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: May 19, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Edward C. Luckenbach, Carl F. Bertsch
  • Octane catalytic cracking process
    Patent number: 4566966
    Abstract: A method for improving the octane rating of products from a catalytic cracking system is disclosed. The method is directed at maintaining the metal contaminant level on the cracking catalyst above about 400 wppm equivalent metal and periodically passing the cracking catalyst through a passivation zone having a reducing atmosphere maintained at an elevated temperature to passivate the metal contaminant on the cracking catalyst.
    Type: Grant
    Filed: August 28, 1984
    Date of Patent: January 28, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Bernie J. Pafford, Carl F. Bertsch
  • Passivation of cracking catalysts
    Patent number: 4522704
    Abstract: A method for passivating the adverse catalytic effects of metal contaminants, such as nickel, vanadium and iron, which become deposited on cracking catalyst is disclosed. A passivation promoter selected from the group consisting of cadmium, germanium, indium, tellurium and zinc is deposited on the catalyst and the catalyst is passed through a passivation zone having a reducing atmosphere maintained at an elevated temperature to decrease the adverse catalytic effects of the metal contaminants. The present method is of particular utility where the residence time of the cracking catalyst in the passivation zone is relatively short.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: June 11, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Carl F. Bertsch
  • Passivation of cracking catalysts with cadmium and tin
    Patent number: 4504381
    Abstract: A method for passivating the adverse catalytic effects of metal contaminants, such as nickel, vanadium and iron, which become deposited on cracking catalyst is disclosed. A passivation promoter comprising elemental tin and/or a tin compound in combination with elemental cadmium and/or a cadmium compound is deposited on the catalyst and the catalyst is passed through a passivation zone having a reducing atmosphere maintained at an elevated temperature to decrease the adverse catalytic effects of the metal contaminants The present method is of particular utility where the residence time of the cracking catalyst in the passivation zone is relatively short.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: March 12, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventor: Carl F. Bertsch