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Saitama-ken, Japan

Tsuneo Yamamoto

USPTO Granted Patents = 5

Average Co-Inventor Count = 3.2

ph-index = 5

Forward Citations = 70(Granted Patents)

Location History:

Toyokawa-shi, Aichi, JP (1998)
Chichibu, JP (1999)
Saitama-ken, JP (2001 - 2004)

Company Filing History:

Ulvac Coating Corporation

Mitsubishi Electric Company

Ulcoat (Ulvac Coating Corporation)

4. 1 out of 15,928

Mitsubishi Electric Corporation

5. 3 out of 832,880

Other

patents

where one patent can have more than one assignee

Years Active: 1998-2004

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6689515 - Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blank (2004-02-10),

2. 6228541 - Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blank (2001-05-08),

3. 5952128 - Phase-shifting photomask blank and method of manufacturing the same as (1999-09-14),

4. 5938897 - Method of manufacturing phase-shifting photomask blank (1999-08-17),

5. 5737786 - Collapsible bed structure for bed-ridden invalids (1998-04-14),

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