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:
Mar. 27, 1979
Filed:
Mar. 30, 1978
Applicant:
Inventor:
Johannes A van Vliet, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313184 ; 313185 ; 313214 ; 313225 ;
Abstract
The invention relates to a high-pressure sodium vapor discharge lamp comprising a discharge tube containing sodium and xenon. In accordance with the invention the inside diameter of the discharge tube is below 5 mm and greater than 1 mm. In addition the xenon pressure is relatively high in the operating condition of the lamp which -- together with a pressure of the sodium in a given range -- can result in a high luminous efficacy of the lamp.
van Vliet, Johannes. (1979). High-pressure sodium vapor discharge lamp (U.S. Patent No. 4146813). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4146813
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile