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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 6686597 B1

PDFFull Text
Expired
Date of Patent:
Feb. 03, 2004

Filed:

Aug. 31, 2001

Substrate rotating device, and manufacturing method and apparatus of recording medium master

Applicant:
Inventors:

Osamu Kumasaka, Koufu, JP;

Kazumi Kuriyama, Koufu, JP;

Hiroki Kaneda, Koufu, JP;

Masami Sone, Koufu, JP;

Kenji Kamimura, Koufu, JP;

Takeharu Iwata, Koufu, JP;

Masaki Kobayashi, Koufu, JP;

Assignee:

Pioneer Corporation, Tokyo, JP;

Attorney:

McGinn & Gibb, PLLC

Primary Examiner:

John R Lee

Assistant Examiner:

Phillip A Johnston

Int. Cl.
CPC ...
C23F 1/00 ;
U.S. Cl.
CPC ...
C23F 1/00 ;
Abstract

A master disc manufacturing apparatus includes an electron-beam emitting portion for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion for applying a substrate with a negative potential having a magnitude of decelerating the electron beam, and a vacuum atmosphere producing portion for evacuating a chamber to produce a vacuum atmosphere therein.

Find Patent Forward Citations

Kumasaka, Osamu. (2004). Substrate rotating device, and manufacturing method and apparatus of recording medium master (U.S. Patent No. 6686597). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6686597

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

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