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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.:

US 4970430 B1

PDFFull Text
Date of Patent:
Nov. 13, 1990

Filed:

Mar. 29, 1989

Fluorescent display apparatus

Applicant:
Inventors:

Hiroshi Kamogawa, Mie, JP;

Kazunori Tatsuda, Mie, JP;

Zenichiro Hara, Nagasaki, JP;

Norihiro Ichikawa, Nagasaki, JP;

Shuji Iwata, Hyogo, JP;

Nobuo Terazaki, Nagasaki, JP;

Assignees:

ISE Electronics Corporation, Ise, JP;

Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;

Attorney:

Burns, Doane, Swecker & Mathis

Primary Examiner:

Palmer C DeMeo

Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313495 ; 3151692 ;
Abstract

A fluorescent display apparatus as a constituent of picture elements of a large-screen display apparatus which is provided with control electrodes for controlling courses of thermoelectrons emitted from cathodes, thereby decreasing fluctuation in brightness of a fluorescent display cell emitting light upon being bombarded by the electrons and preventing the electrons from bombarding other than predetermined fluorescent display cell with result of no emission of false light.

Find Patent Forward Citations

Kamogawa, Hiroshi. (1990). Fluorescent display apparatus (U.S. Patent No. 4970430). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4970430

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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