Patents by Inventor Thomas E. Neumann

Thomas E. Neumann 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).

  • Chemical intermediates and a process for their preparation
    Patent number: 4745219
    Abstract: This invention pertains to chemical intermediates for a new class of 2-haloacetanilide herbicides and a process for preparation of these intermediates. The process generally involves nitration of substituted benzotrifluoride compounds.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: May 17, 1988
    Assignee: Monsanto Company
    Inventors: Thomas E. Nickson, John P. Chupp, Thomas E. Neumann
  • Process for preparing substituted benzotrichloride compounds
    Patent number: 4593144
    Abstract: This invention pertains to a process for preparing substituted and unsubstituted benzotrichlorides. The process generally involves reacting the starting compound with a perchloroalkane with presence of base and a phase transfer catalyst.
    Type: Grant
    Filed: October 10, 1984
    Date of Patent: June 3, 1986
    Assignee: Monsanto Company
    Inventors: John P. Chupp, Thomas E. Neumann
  • Oxidative ring cleavage process
    Patent number: 4587061
    Abstract: The novel reaction of 4-morpholinylmethylphosphonic acid with an aqueous alkali yields the trialkali metal salt of N-phosphonomethylglycine.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: May 6, 1986
    Assignee: Monsanto Company
    Inventors: William H. Miller, Thomas E. Neumann
  • Substituted benzotrifluoride compounds as chemical intermediates and a process for their preparation
    Patent number: 4532353
    Abstract: This invention pertains to two substituted benzotrifluoride compounds useful as chemical intermediates for a new class of 2-haloacetanilide herbicides and a process for making these intermediates. The process generally involves nitration and reduction of the corresponding benzotrifluoride compound.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: July 30, 1985
    Assignee: Monsanto Co.
    Inventors: John P. Chupp, Audrey Y. Ku, Thomas E. Neumann, Thomas E. Nickson
  • Preparation of ortho-aminobenzotrifluoride
    Patent number: 4469890
    Abstract: This invention relates to a process for the preparation of ortho-aminobenzotrifluoride (OABT) from benzotrifluoride (BTF). The process provides an overall route employing non-isolation of intermediates which can be run smoothly and which results in the preparation of OABT in high yields with less contamination. This process includes a catalytic halogenation step in which BTF is converted to meta-halo BTF and other mono and di-halo isomers of BTF followed by nitration in the same reaction vessel under conditions which do not favor nitration of the di-halo isomers of BTF to produce a mixture which predominates in 5-halo-2-nitro BTF. In the final step the 5-halo-2-nitro BTF present is reduced and hydrodehalogenated with H.sub.2 in the presence of a catalyst to form OABT. Recyclable BTF is also obtained from the final reaction.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: September 4, 1984
    Assignee: Monsanto Company
    Inventors: John P. Chupp, Thomas E. Neumann, Michael J. Miller