Yasushi Hiramatsu

Follow

Person

Himeji, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Injection mold for an optical disk
- Patent number 4,741,689
- Issue date May 3, 1988
- Daicel Chemical Industries, Ltd.
- Yoshio Onizawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL