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:
Apr. 03, 1979
Filed:
Jan. 24, 1978
Applicant:
Inventors:
Milton B Frankel, Tarzana, CA (US);
Frederick D Raniere, Northridge, CA (US);
Wallace W Thompson, Tarzana, CA (US);
Edward F Witucki, Van Nuys, CA (US);
Dean O Woolery, II, Reseda, CA (US);
Assignee:
Rockwell International Corporation, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260644 ;
Abstract
A method of isolating nitroform from a solution of nitric acid, nitroform, and water by adding sulfuric acid and preferentially extracting the nitroform with methylene chloride. The nitroform is then extracted from the methylene chloride solution into water. It is a particular advantage of the present method that no distillations involving nitroform are required.