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:
Apr. 17, 2001
Filed:
Jul. 21, 1999
Applicant:
Inventors:
Martin Grendze, Indianapolis, ID (US);
Susan L. Vorhies, Indianapolis, ID (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
Described are processes for the large, commercial scale production of USP grade nicotinamide, wherein the USP grade product is isolated using novel strategies which minimize product waste, and avoid the need for crystallizations and/or ameliorate complications arising in crystallization strategies. Preferred processes involve the processing of nicotinamide reaction crudes over both cation exchange and weak base resins and the subsequent recovery of USP grade nicotinamide by simple evaporation.
Quick Actions:
Grendze, Martin. (2001). Processes for producing highly pure nicotinamide (U.S. Patent No. 6218543). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6218543
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile