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:
May. 18, 1976
Filed:
Jul. 02, 1974
Rolf Wurmb, Heidelberg, DT;
Dietmar Werner, Weisenheim, DT;
Gerd Wunsch, Speyer, DT;
Volker Kiener, Ludwigshafen, DT;
Wolfgang Schwarz, Ludwigshafen, DT;
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Abstract
Cyclic phosphorus nitride esters are prepared as flameproofers of high durability for use on regenerated cellulose. The known synthesis from cyclic phosphorus nitride chlorides with alcohols in the presence of amines is controlled under specific temperature conditions such that desired side-reactions permit the production, in a simple manner and in very high yields, of products showing a durability to washing not hitherto achieved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile