Keiko Koga

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Sagamihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Piezoelectric polymeric material, a process for producing the same...
- Patent number 4,578,442
- Issue date Mar 25, 1986
- Toray Industries, Inc.
- Hiroji Ohigashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ultrasonic transducer employing piezoelectric polymeric material
- Patent number 4,577,132
- Issue date Mar 18, 1986
- Toray Industries, Inc.
- Hiroji Ohigashi
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL