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:
Nov. 14, 1978
Filed:
Feb. 15, 1977
Applicant:
Inventors:
Merle S Masri, Emeryville, CA (US);
Virginia G Randall, El Cerrito, CA (US);
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
536 20 ; 210 24 ; 260-9 ; 260 / ; 526 23 ; 536104 ; 536106 ;
Abstract
Superoxy-anion-forming metals, such as chromium, manganese, and the like, are removed from materials containing the same by contacting the material with an anionically-modified, nitrogen-containing polymer, such as sulfite-modified, sulfate-modified, or chloride-modified chitosan.