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:
Sep. 02, 2014
Filed:
Jan. 27, 2009
Applicant:
Peter Theodorus Witte, Utrecht, NL;
Inventor:
Peter Theodorus Witte, Utrecht, NL;
Assignee:
BASF Corporation, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 211/00 (2006.01); C07C 221/00 (2006.01); C07C 223/00 (2006.01); C07C 225/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is directed to a process for the preparation of an aqueous colloidal precious metal suspension, which process comprises reducing a precious metal salt in aqueous solution using a functionalized, water soluble quaternary ammonium salt in the absence of organic solvents, to form elementary nanoparticles.