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:
Jul. 18, 1978
Filed:
Dec. 23, 1976
Applicant:
Inventor:
William Thomas Silfvast, Holmdel, NJ (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01D / ;
U.S. Cl.
CPC ...
2041 / ; 204D / ; 55-6 ;
Abstract
A photochemical method for changing the isotopic composition of an element is disclosed. The method involves passing an electron discharge through a mixture of a buffer gas, which controls the uniformity and electron temperature of the discharge, and a vapor of the element. By means of the phenomenon of resonance radiation trapping, the electron discharge preferentially excites and ionizes one isotope. Removal of the ions by cataphoresis separates the element into two amounts with different isotopic ratios.