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. 21, 2017
Filed:
Jun. 05, 2015
Applicants:
Sri International, Menlo Park, CA (US);
Pacific Scientific Energetic Materials Company, Chandler, AZ (US);
Inventors:
Jeffrey C. Bottaro, Menlo Park, CA (US);
Mark A. Petrie, Menlo Park, CA (US);
Jon G. Bragg, Phoenix, AZ (US);
John W. Fronabarger, Sun Lakes, AZ (US);
Michael D. Williams, Gilbert, AZ (US);
Assignees:
SRI International, Menlo Park, CA (US);
Pacific Scientific Energetic Materials Company, LLC, Chandler, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 257/06 (2006.01);
U.S. Cl.
CPC ...
C07D 257/06 (2013.01);
Abstract
Described are methods for preparing salts of 5-nitrotetrazolate by reacting 5-aminotetrazole, an acid, and sodium nitrite in water in a batch reaction at an elevated temperature. As examples, the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid, and the elevated temperature is at or above 65° C.