Patents by Inventor Ralph M. Kastner

Ralph M. Kastner 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).

  • Antibiotic A53868 and process for production thereof
    Patent number: 4482488
    Abstract: Antibiotic A53868 factor A, which is N.sup.2 -glycyl-N-(2-methylene-2-phosphonoethyl)leucinamide, and the formula: ##STR1## and the salts thereof, which are useful as antibiotics or as intermediates to antibiotics; methods of preparing A53868 factor A by fermentation of Streptomyces luridus; and the microorganism S. luridus NRRL 15101.
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: November 13, 1984
    Assignee: Eli Lilly and Company
    Inventors: Ronald D. Johnson, Ralph M. Kastner, Stephen H. Larsen, Earl E. Ose
  • Process for production antibiotic A53868
    Patent number: 4463092
    Abstract: Antibiotic A53868 factor A, which is N.sup.2 -glycyl-N-(2-methylene-2-phosphonoethyl)leucinamide, and the formula: ##STR1## and the salts thereof, which are useful as antibiotics or as intermediates to antibiotics; methods of preparing A53868 factor A by fermentation of Streptomyces luridus; and the microorganism S. luridus NRRL 15101.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: July 31, 1984
    Assignee: Eli Lilly and Company
    Inventors: Ronald D. Johnson, Ralph M. Kastner, Stephen H. Larsen, Earl E. Ose