Patents by Inventor Donald Roy Maulding

Donald Roy Maulding 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 2,3-pyridinedicarboximides
    Publication number: 20020120143
    Abstract: There is provided a process for the preparation of 2,3-pyridinedicarboximides having the structural formula I 1
    Type: Application
    Filed: June 29, 2001
    Publication date: August 29, 2002
    Applicant: Intellectual Property Department, BASF Aktiengesellschaft
    Inventors: Kenneth Alfred Martin Kremer, Wen-Xue Wu, Donald Roy Maulding
  • Process for the preparation of 2,3-pyridinedicarboximides
    Patent number: 6316629
    Abstract: There is provided a process for the preparation of 2,3-pyridinedicarboximides having the structural formula I The 2,3-pyridinedicarboximides are useful as intermediates in the preparation of herbicidal 2-(2-imidazolin-2-yl)nicotinic acids, esters and salts.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: November 13, 2001
    Assignee: American Cyanamid Co.
    Inventors: Kenneth Alfred Martin Kremer, Wen-Xue Wu, Donald Roy Maulding
  • Process for the preparation of 5-(alkoxymethyl)-2,3-pyridinedicarboximide compounds
    Patent number: 6034253
    Abstract: There is provided a process for the preparation of 5-(alkoxymethyl)-2,3-pyridinedicarboximide compounds having the structural formula I ##STR1## The 5-(alkoxymethyl)-2,3-pyridinedicarboximide compounds are useful as intermediates in the preparation of herbicidal 5-(alkoxymethyl)-2-(2-imidazolin-2-yl)-nicotinic acid, ester and salt compounds.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: March 7, 2000
    Assignee: America Cyanamid Company
    Inventors: Kenneth Alfred Martin Kremer, Wen-Xue Wu, Donald Roy Maulding, deceased
  • Process for the preparation of 5-(alkoxymethyl)-2,3-pyridinedicarboximide compounds
    Patent number: 5905154
    Abstract: There is provided a process for the preparation of 5-(alkoxymethyl)-2,3-pyridinedicarboximide compounds having the structural formula I ##STR1## The 5-(alkoxymethyl)-2,3-pyridinedicarboximide compounds are useful as intermediates in the preparation of herbicidal 5-(alkoxymethyl)-2-(2-imidazolin-2-yl)nicotinic acid, ester and salt compounds.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: May 18, 1999
    Assignee: American Cyanamid Company
    Inventors: Kenneth Alfred Martin Kremer, Wen-Xue Wu, Donald Roy Maulding, deceased
  • Process for the preparation of 2,3-pyridinedicarboximides
    Patent number: 5849916
    Abstract: There is provided a process for the preparation of 2,3-pyridinedicarboximides having the structural formula I ##STR1## The 2,3-pyridinedicarboximides are useful as intermediates in the preparation of herbicidal 2-(2-imidazolin-2-yl)nicotinic acids, esters and salts.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: December 15, 1998
    Assignee: American Cyanamid Company
    Inventors: Kenneth Alfred Martin Kremer, Wen-Xue Wu, Donald Roy Maulding, deceased
  • Process for manufacturing crystal violet lactone
    Patent number: 4076728
    Abstract: Crystal Violet Lactone (CVL) is produced in high yield and highly pure form by a process comprising condensing Michlers hydrol with 3-dimethylaminobenzoic acid to form leuco CVL, extracting the reaction mixture containing the leuco CVL with an aromatic hydrocarbon solvent, such as toluene, or a mixture of such a solvent and a water-immiscible alkane, such as heptane, to remove impurities therefrom and treating the extracted reaction mixture with an inorganic oxidizing agent to convert the leuco CVL to CVL.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: February 28, 1978
    Assignee: American Cyanamid Company
    Inventor: Donald Roy Maulding
  • Polymers in oxalate chemiluminescent systems
    Patent number: 3994820
    Abstract: Novel, high light capacity chemiluminescent systems are disclosed. The high capacity is produced by adding a small amount of a polymer selected from the class consisting of: (1) homopolymers and copolymers of poly(alkylene oxides); (2) homopolymers and copolymers of poly(vinyl alkyl esters) and poly(vinyl alkyl ethers) with the optional inclusion of minor amounts of alkylenes and styrenes in said copolymers; (3) 1:1 alternating copolymers of maleic anhydride with alkylenes and styrenes; (4) cellulose esters and mixed cellulose esters of 2-, 3- and 4-carbon acids and mixtures of said esters with the poly(alkylene oxides), to a chemiluminescent system containing a bisaryloxylate, an organic fluorescer a peroxide, and an organic solvent.
    Type: Grant
    Filed: May 9, 1974
    Date of Patent: November 30, 1976
    Assignee: American Cyanamid Company
    Inventors: Donald Roy Maulding, Michael Rauhut