Patents by Inventor Steven A. Lemmel

Steven A. Lemmel 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).

  • &bgr;-casein expressing constructs
    Patent number: 6287866
    Abstract: The subject invention relates to &bgr;-casein expressing constructs which have significant stability when introduced into host cells. These constructs, for purposes of the present invention, have been designated as pRAB-84-69 and pRSB-14. Each construct comprises an isolated DNA sequence comprising i) a nucleotide sequence encoding a protein, wherein said nucleotide sequence is operably linked to a promoter, ii) a nucleotide sequence encoding a first subunit of a kinase, iii) a nucleotide sequence encoding a second subunit of a kinase, iv) a nucleotide encoding a peptidase and v) a nucleotide sequence encoding a bacterial resistance marker. These constructs, once introduced into a host cell, may be used in the production of, for example, recombinant human beta-casein.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: September 11, 2001
    Assignee: Abbott Laboratories
    Inventors: Pradip Mukerji, Steven A. Lemmel, Amanda Eun-Yeong Leonard, Sunita Chaudhary
  • Utilization of xylan and corn fiber for direct fermentation by clostridium acetobutylicum
    Patent number: 4649112
    Abstract: Butanol, acetone and fatty acids are produced by direct fermentation of a low-cost source of carbohydrates by Clostridium acetobutylicum. The carbohydrate source is selected from the group consisting of corn fiber, xylan, and mixtures of corn fiber and xylan.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: March 10, 1987
    Assignee: CPC International Inc.
    Inventors: Rathin Datta, Steven A. Lemmel