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:
Feb. 08, 2005
Filed:
Mar. 14, 2003
Applicants:
S. Ananda Weerawarna, Seattle, WA (US);
Richard A. Jewell, Tacoma, WA (US);
Inventors:
S. Ananda Weerawarna, Seattle, WA (US);
Richard A. Jewell, Tacoma, WA (US);
Assignee:
Weyerhaeuser Company, Federal Way, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D221/20 ; C07D491/113 ;
U.S. Cl.
CPC ...
Abstract
A method for making piperidone ketals by condensing a suitable alcohol with a piperidone in the presence of polyphosphoric acid.