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:
Apr. 04, 2000
Filed:
Jun. 24, 1997
Applicant:
Inventor:
Mahadeva P Sinha, Temple City, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; H01J / ;
U.S. Cl.
CPC ...
250298 ; 250281 ;
Abstract
Improvements to reduce the size of a GCMS while improving its performance. A first improvement adjusts the magnet for radii of travel. Another feature removes a portion of the magnet to compensate for the fringe field. Yet another improvement shaves portions off of the yoke near where they meet the pole pieces.