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:
Aug. 31, 1993
Filed:
Sep. 21, 1990
Applicant:
Inventors:
Ranjit Thakur, St. Paul, MN (US);
John S Roden, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
252 6254 ; 252 6251 ;
Abstract
An aqueous ferrofluid comprises a plurality of colloidally-dispersed magnetite particles and a dispersing aid. The magnetite particles are coated with an anti-agglomeration agent which is a carboxy-functional polymer.
Thakur, Ranjit. (1993). Aqueous ferrofluid (U.S. Patent No. 5240626). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5240626
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile