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:
Dec. 28, 1976
Filed:
Jul. 26, 1974
Applicant:
Inventors:
Alan V Hall, Wappingers Falls, NY (US);
Merlyn H Perkins, Hopewell Junction, NY (US);
Hans C Pfeiffer, Ridgefield, CT (US);
Edward V Weber, Poughkeepsie, NY (US);
Ollie C Woodard, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
315383 ; 315 30 ; 315307 ; 315389 ;
Abstract
A beam of charged particles has its alignment and brightness alternately controlled in accordance with the current of the beam. The measurements of the current and any corrections for alignment or brightness are made when the beam is not applied to a target.
Hall, Alan. (1976). Method and apparatus for controlling brightness and alignment of a beam (U.S. Patent No. 4000440). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4000440
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile