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:
Dec. 04, 2012
Filed:
Oct. 21, 2009
Applicants:
Gesa Paradies, Brig, CH;
Thomas Riedel, Brig, CH;
Christian Schnider, Visp, CH;
Inventors:
Assignee:
Lonza Ltd., Basel, CH;
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/17 (2006.01);
U.S. Cl.
CPC ...
Abstract
Organic dithiopyrophosphates of formula wherein R, R, R, Rand Rindependently are hydrogen, Calkyl, chloromethyl or bromomethyl, are prepared in a two-step process from the corresponding 1,3-diols and thiophosphoryl chloride, using 3-methylpyridine both as solvent and as base.