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:
Aug. 31, 1976
Filed:
Feb. 24, 1975
Applicant:
Inventors:
Arthur Leo Smith, Lancaster, PA (US);
Donnavon David Shaffer, Lititz, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
2523 / ;
Abstract
Manganese-and-magnesium-coactivated strontium sulfide phosphors are both photoluminescent and cathodoluminescent. The incorporation of small amounts (5 to 1000 ppm) of magnesium into manganese-activated strontium sulfide phosphors shifts the CIE emission color coordinates from about x = 0.323 and y = 0.650 for the magnesium-free phoshor to about x = 0.370 and y = 0.611, for the maximum amount of incorporated magnesium.
Smith, Arthur. (1976). Manganese-and-magnesium-activated strontium sulfide phosphors (U.S. Patent No. 3977991). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3977991
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile