Patents by Inventor Steve Schroeder

Steve Schroeder 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).

  • Synthesis of N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester using L-&agr;-aspartyl-L-phenylalanine 1-methyl ester precursors
    Patent number: 6642406
    Abstract: N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is produced by hydrogenation of a mixture of 3,3-dimethylbutyraldehyde and a precursor of L-&agr;-aspartyl-L-phenylalanine 1-methyl ester. In particular, N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is produced using an acid salt of L-&agr;-aspartyl-L-phenylalanine 1-methyl ester or N-protected L-&agr;-aspartyl-L-phenylalanine 1-methyl ester. The production method is efficient and low cost, as compared with conventional N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester synthesis.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: November 4, 2003
    Assignee: The NutraSweet Company
    Inventors: Indra Prakash, Zhi Guo, Steve Schroeder, Kurt L. Wachholder
  • Synthesis of N-[N-(3,3-dimethylbutyl)-L-alpha-aspartyl]-L-phenylalanine 1-methyl ester using L-alpha-aspartyl-L- phenylalanine 1-methyl ester precursors
    Publication number: 20020019557
    Abstract: N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is produced by hydrogenation of a mixture of 3,3-dimethylbutyraldehyde and a precursor of L-&agr;-aspartyl-L-phenylalanine 1-methyl ester. In particular, N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is produced using an acid salt of L-&agr;-aspartyl-L-phenylalanine 1-methyl ester or N-protected L-&agr;-aspartyl-L-phenylalanine 1-methyl ester. The production method is efficient and low cost, as compared with conventional N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester synthesis.
    Type: Application
    Filed: May 18, 2001
    Publication date: February 14, 2002
    Inventors: Indra Prakash, Zhi Guo, Steve Schroeder, Kurt L. Wachholder
  • Container
    Patent number: D539146
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: March 27, 2007
    Assignee: creative werks, LLC
    Inventor: Steve Schroeder