Patents by Inventor Robert Francis Doehner, Jr.

Robert Francis Doehner, Jr. 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 preparation of 5-and/or 6-substituted-2-hydroxybenzoic acid esters
    Patent number: 6441219
    Abstract: There is provided a single-step process for the preparation of a compound of formula I. Compounds of formula I are useful as starting materials in the synthesis of natural products and in the manufacture of benzophenone fungicidal agents.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: August 27, 2002
    Assignee: BASF Corporation
    Inventor: Robert Francis Doehner, Jr.
  • Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran herbicides and intermediates useful therein
    Patent number: 6294676
    Abstract: The present invention provides compounds of formula I and processes for the preparation and purification thereof. Compounds of formula I are useful as intermediates in the manufacture of 6-(arylcarbonyl)-4-oximino-dihydrobenzothiopyran herbicidal agents.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: September 25, 2001
    Assignees: American Cyanamid Company, Idemitsu Kosan Co., Ltd.
    Inventors: Robert Francis Doehner, Jr., Thomas Walter Drabb, Robert Paul Brigance
  • PROCESS FOR THE PREPARTION OF 6-(ARYLCARBONYL)-4-OXIMO-DIHYDROBENZOTHIOPYRAN HERBICIDES AND INTERMEDIATES USEFUL THEREIN
    Publication number: 20010014745
    Abstract: The present invention provides compounds of formula I and processes for the preparation and purification thereof.
    Type: Application
    Filed: December 15, 1999
    Publication date: August 16, 2001
    Inventors: ROBERT FRANCIS DOEHNER, JR., THOMAS WALTER DRABB, ROBERT PAUL BRIGANCE
  • Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran herbicides and intermediates useful therein
    Patent number: 6008402
    Abstract: The present invention provides compounds of formula I and processes for the preparation and purification thereof. ##STR1## Compounds of formula I are useful as intermediates in the manufacture of 6-(arylcarbonyl)-4-oximino-dihydrobenzothiopyran herbicidal agents.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: December 28, 1999
    Assignees: American Cyanamid Company, Idemitsu Kosan Co., Ltd.
    Inventors: Robert Francis Doehner, Jr., Thomas Walter Drabb, Robert Paul Brigance
  • Process for the preparation of pyridine dicarboxylate derivatives
    Patent number: 5892050
    Abstract: There is provided a single vessel process for the preparation of a pyridine dicarboxylate compound of formula I ##STR1## via the sequential condensation of an alkyl vinyl ether with Vilsmeier reagent, oxalacetate and an ammonia source.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: April 6, 1999
    Assignee: American Cyanamid Company
    Inventor: Robert Francis Doehner, Jr.