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:
Nov. 13, 1979
Filed:
May. 19, 1978
Applicant:
Inventors:
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
313480 ; 106 53 ; 252478 ;
Abstract
Disclosed is a cathode-ray tube having a face plate of soft glass which up to an accelerating voltage of 40 KV gives an X-ray emission of at most 0.5 mr/h measured at a distance of 5 cm. The glass has a strain point between 450.degree. and 480.degree. C. and a softening temperature between 660.degree. and 770.degree. C. and comprises, inter alia, 3-14% by weight of BaO and 5-10% by weight of PbO.
Van Erk, Klaus. (1979). Cathode-ray tube (U.S. Patent No. 4174490). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4174490
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile