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:
May. 27, 1997
Filed:
Nov. 03, 1995
Applicant:
Inventors:
Robert D Brittain, Walnut Creek, CA (US);
Mingda Wang, Walnut Creek, CA (US);
Assignee:
Varian Associates, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250292 ; 250291 ;
Abstract
The interior surfaces of an ion trap or ionization chamber is coated with an inert, inorganic non-metallic insulator or semiconductor material for the passivation of such surfaces so as to minimize absorption, degradation or decomposition of a sample in contact with the surface.