Patents by Inventor Stephen Kraychy

Stephen Kraychy 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).

  • Radiopharmaceutical complexes of N-(tri-substituted alkyl)-iminodiacetic acids
    Patent number: 4308249
    Abstract: Complexes of radiolabelled metals with N-(tri-substituted alkyl)-iminodiacetic acids or salts thereof having utility as radiopharmaceutical agents for monitoring the activity of an organ, their preparation and a method employing such complexes for externally monitoring the activity of an organ are disclosed.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: December 29, 1981
    Assignee: G. D. Searle & Co.
    Inventors: Patricia Frank, Stephen Kraychy, Ernest F. Le Von
  • Radiopharmaceutical method for monitoring kidneys
    Patent number: 4301140
    Abstract: Complexes of technetium-99m with fructose 6-phosphate or fructose 1,6-diphosphate or salts thereof having utility as radiopharmaceutical agents for monitoring the activity of an organ, their preparation and a method employing such complexes for externally monitoring the activity of an organ are disclosed.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: November 17, 1981
    Assignee: G. D. Searle & Co.
    Inventors: Patricia Frank, Stephen Kraychy, Ernest F. Le Von
  • Sodium 3-[[[2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl]-amino]carbonyl]-2-pyrid inecarboxylic acid and related compounds labeled with technetium-99m
    Patent number: 4193979
    Abstract: Sodium 3-[[[2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl]-amino]carbonyl]-2-pyridin ecarboxylic acid and related compounds which are labeled with radioactive technetium-99m are described as well as their preparations. These novel complexes are useful by reason of their utility as radiopharmaceutical imaging agents. Particularly, these complexes are useful as gallbladder and liver imaging agents.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: March 18, 1980
    Assignee: G. D. Searle & Co.
    Inventors: Patricia Frank, Stephen Kraychy, Ernest F. LeVon