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:
Oct. 09, 1979
Filed:
Mar. 22, 1977
Applicant:
Inventors:
Alan Rembaum, Altadena, CA (US);
Amitava Gupta, Los Angeles, CA (US);
Willi Volksen, Pasadena, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C08J / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
428402 ; 526265 ; 20415922 ; 20415915 ; 428407 ; 260 4244 ;
Abstract
Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.
Rembaum, Alan. (1979). Polyvinyl pyridine microspheres (U.S. Patent No. 4170685). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4170685
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile