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:
Jan. 28, 1997
Filed:
Jul. 31, 1990
Applicant:
Inventor:
Norman B Rainer, Richmond, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521 29 ; 521 25 ; 521 28 ; 521 32 ;
Abstract
An open-celled cellulosic sponge contains a thermally insolubilized polyethyleneimine (PEI) capable of selectively removing dissolved ions from aqueous systems. By virtue of a cuboid configuration of critically selected dimensions, the insolubilized PEI is substantially uniformly distributed in useful amounts throughout the sponge.
Rainer, Norman. (1997). Sponge for the absorption of metal ions (U.S. Patent No. 5597850). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5597850
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile