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:
Oct. 28, 1986
Filed:
Mar. 25, 1985
Fumio Watanabe, Fukushima, JP;
Yoshiaki Hara, Tokyo, JP;
Masao Miyamoto, Tokyo, JP;
Yasuo Kusumoto, Tokyo, JP;
Syojiro Komaki, Tokyo, JP;
Seiko Instruments & Electronics Ltd., Tokyo, JP;
Abstract
A double grid anode is characterized in that said anode is comprised of a first cage-like anode made of a metal grid or wire gauze that permits that passage of electrons and that has an open end, a second anode which also consists of a metal grid or wire gauze located at the open end side of said first anode, a hot-cathode filament arranged around the outer periphery of said first anode, and an ion-extraction electrode which faces said anode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile