The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2004
Filed:
Jun. 06, 2002
Applicant:
Inventors:
Verlan H. Van Rheenen, Portage, MI (US);
Edward J. Hessler, Kalamazoo, MI (US);
Assignee:
Bridge Organics Co., Vicksburg, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 1/00 ; A61K 3/156 ; A61K 3/158 ; C07D / ;
U.S. Cl.
CPC ...
C07J 1/00 ; A61K 3/156 ; A61K 3/158 ; C07D / ;
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.