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:
Sep. 20, 1977
Filed:
Jun. 04, 1976
Applicant:
Inventor:
Charles Carlyle Helms, Trumbull, CT (US);
Assignee:
The Perkin-Elmer Corporation, Norwalk, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01K / ;
U.S. Cl.
CPC ...
313112 ; 250504 ; 250510 ; 350-1 ; 356 51 ;
Abstract
An ozone absorbance controller for use with an ultraviolet light source, which includes a vented, trapped gas filter disposed in the optical emission path of said ultraviolet light source to absorb high energy ultraviolet rays of wavelengths below about 200 nanometers, and thereby substantially preventing the formation of ozone in the optical emission path subsequent to the filter.