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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 4417175 B1

PDFFull Text
Date of Patent:
Nov. 22, 1983

Filed:

Mar. 31, 1982

Ion sputter textured graphite electrode plates

Applicant:
Inventors:

Arthur N Curren, North Ridgeville, OH (US);

Ralph Forman, Rocky River, OH (US);

James S Sovey, Strongsville, OH (US);

Edwin G Wintucky, Lakewood, OH (US);

Assignee:

The United States of America as represented by the Administrator of the, , US;

Attorneys:

Musial; Norman T.

Manning; John R.

Shook; Gene E.

Primary Examiner:

Saxfield Chatmon

Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315-538 ; 313106 ; 313107 ; 313351 ;
Abstract

A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons. Electrode plates of this material are used in multistage depressed collectors. An ion flux having an energy between 500 eV and 1000 eV and a current density between 1.0 mA/cm.sup.2 and 6.0 mA/cm.sup.2 produces surface roughening or texturing which is in the form of needles or spires. Such textured surfaces are especially useful as anode collector plates in high efficiency electron tube devices.

Find Patent Forward Citations

Curren, Arthur. (1983). Ion sputter textured graphite electrode plates (U.S. Patent No. 4417175). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4417175

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

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