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:
Jun. 02, 1987
Filed:
Dec. 13, 1983
Applicant:
Inventor:
Craig Bolon, Brookline, MA (US);
Assignee:
Betagen Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01T / ;
U.S. Cl.
CPC ...
250385 ; 250374 ;
Abstract
A process for precision measurement of charged particle emissions from a surface and an apparatus for providing a high resolution digital image of the distribution of such emissions in a minimum exposure time over a relatively large surface area. The process of measurement uses the direction of emissions as determined by two or more position measuring elements of an area detector. The apparatus is based on multiple region detector elements that employ proportional amplification of ionization in a gas.