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. 18, 1981
Filed:
Feb. 29, 1980
Applicant:
Inventor:
John W Grant, Chadds Ford, PA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03B / ;
U.S. Cl.
CPC ...
209155 ; 233 27 ;
Abstract
A long, thin annular belt-like channel is designed for use in sedimentation field flow fractionation. This channel, which may be the rotor of a centrifuge, is designed to maintain its thickness dimension constant by forming the radially inner wall with a radial thickness that is about balanced by the centrifugal pressure of fluid in the flow channel.
Grant, John. (1981). Rotor for sedimentation field flow fractionation (U.S. Patent No. 4284497). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4284497
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile