Inventor

Tadao Hiramatsu

Inventor

Nagoya, JP

Overview

3→

Patents

1976–1986

Patent span

Physics

Primary field (CPC G)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein40%

B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general20%

G04FTime-interval measuring20%

H10NElectric solid-state devices not otherwise provided for20%

PatentTitleYear

4,598,375'Time measuring circuit'1986 4,075,516'Diffraction electroacoustic transducer'1978 3,944,812'Electrooptic thin-film modulator'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1986Patents assigned to HAGIWARA DENKI KK (3)· patent assignee history

1976–1978Based in Nagoya, JP· patent location history

1986Based in Aichi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HAGIWARA DENKI KK	3	1976–1986

Locations

Location	Patents	Span
Nagoya, JP	2	1976–1978
Aichi, JP	1	1986