26 Utility Patents
#5,090 in Tokyo
#24,660 in Japan
#114,432 in the World
Forward Citations = 192
Company Filing History:

Hoya Glass Disk Vietnam Ii Ltd.
Hoya Glass Disk (thailand) Ltd.
4. 3 out of 274

5. 3 out of 4,977
Oki Electric Industry Co., Ltd.
where one patent can have more than one assignee
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