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. 16, 2010
Filed:
Feb. 06, 2006
Applicant:
Ilpo Laitinen, Espoo, FI;
Inventor:
Ilpo Laitinen, Espoo, FI;
Assignee:
Fermion Oy, Espoo, FI;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 211/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is related to a process for the preparation of [1,4']bipiperidinyl-1′-carbonyl chloride or its hydrochloride using methylene chloride as a solvent in the reaction of 4-piperidinopiperidine with phosgene and the removing the reaction solvent by using an additional distillation solvent to raise the distillation temperature.