Patents Assigned to Bridge Organics Co.
  • Crystalline 19-norsteroids
    Patent number: 8044223
    Abstract: The present invention are two crystalline salts, 17?-acetoxy-21-methoxy-11?-(4-,N,N-dimethylaminophenyl)-19 norpregna-4,9-diene-3,20-dione hydrochloride and 17?-acetoxy-21-methoxy-11?-(4-,N,N-dimethylaminophenyl)-19 norpregna-4,9-diene-3,20-dione hydrobromide, of the corresponding free base which is an amorphous solid.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: October 25, 2011
    Assignee: Bridge Organics Co.
    Inventor: Verlan H. VanRheenen
  • Process for making estra-4,9(10)-diene steroids
    Patent number: 6812358
    Abstract: A novel process for making estra-4,9(10)-diene-3,17-dione steroids from readily available 19-nor-androst-4-ene-3-one steroids by a straightforward three-step process. Products of this process are important intermediates in the preparation of biologically active substances.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: November 2, 2004
    Assignee: Bridge Organics Co.
    Inventors: Verlan H. Van Rheenen, Edward J. Hessler