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Masaaki Otsuka

USPTO Granted Patents = 8

EPO Patents = 1

Average Co-Inventor Count = 2.8

ph-index = 5

Forward Citations = 82(Granted Patents)

Location History:

Yono, JP (1991)
Urawa, JP (1997 - 1999)
Saitama-ken, JP (2004)
Saitama, JP (1999 - 2006)

Company Filing History:

Sumita Optical Glass, Inc.

Meiji Seika Kaisha, Ltd.

Rakuto Kasei Industrial Co., Ltd.

where one patent can have more than one assignee

Years Active: 1991-2006

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7151064 - Optical glass suitable for mold forming (2006-12-19),

2. 6784128 - Optical glass for molding (2004-08-31),

3. 5961883 - Oxide fluorescent glass capable of exhibiting visible fluorescence (1999-10-05),

4. 5885306 - Method for preventing redeposition of desorbed dyes to pre-dyed fabrics (1999-03-23),

5. 5755998 - Fluorophosphate fluorescent glass capable of exhibiting fluorescence in (1998-05-26),

6. 5635109 - Tb- or Eu-containing fluorophosphate fluorescent glass (1997-06-03),

7. 5017520 - Fluorosphosphate optical glass (1991-05-21),

8. 4990468 - Fluorophosphate optical glass (1991-02-05),

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