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. 23, 1976
Filed:
Dec. 08, 1971
Sheldon L Epstein, Wilmette, IL (US);
Coulter Electronics, Inc., Hialeah, FL (US);
Abstract
A particle analyzer having a low impedance low voltage d.c. source series connected to a scanner and the parallel combination of a d.c. short-circuiting device and a high input impedance, voltage sensitive signal detector. A d.c. current flowing in the scanning ambit is modulated by the passage of particles therein. The detection of particles is unaffected by long term changes in the conductivity of the fluid medium which carries the particles within the scanning ambit, since the d.c. current then flowing in the scanning ambit is caused to be deliberately variable and inversely proportional to the resistivity of the fluid medium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile