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:
Mar. 18, 1986
Filed:
Jul. 15, 1985
Applicant:
Inventors:
Barry C Arkles, Ambler, PA (US);
Burrell N Hamon, Fairless Hills, PA (US);
Assignee:
Petrarch Systems Inc., Bristol, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556409 ;
Abstract
Cyclotrisilazanes, including hexamethylcyclotrisilazane, a difunctional blocking agent used to derivatize and protect active hydrogen-containing substrates during chemical analysis and synthetic reactions, may be prepared by heating cyclotetrasilazanes using a Group VIII catalyst in the presence of hydrogen. In addition, the average degree of polymerization of cyclosilazane compositions may be reduced.