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:
Feb. 28, 1984
Filed:
Jun. 17, 1981
Applicant:
Inventors:
Takashi Fujimura, Mobara, JP;
Katsuyu Takahashi, Mobara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65110 ; 65108 ; 65281 ; 65292 ;
Abstract
A curved discharge tube is manufactured by preparing a straight quartz tube having an eccentric longitudinal opening and then bending the heated tube into a current tube with a thicker waall portion of the tube on the outside and the thinner wall portion on the inner side. It is advantageous to seal inner gas into the tube before bending so as to obtain a curved tube having uniform wall thickness.
Fujimura, Takashi. (1984). Method of manufacturing curved discharge tubes (U.S. Patent No. 4433994). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4433994
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile