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Inventor

Yasutaro Kawamura

Inventor
Okazaki, JP

Overview

5→
Patents
1980–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 5 as inventor

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

B22Cprimary
B22CFoundry moulding80%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein20%
PatentTitleYear
10,890,787Optical modulator20214,633,928'Apparatus for making core from green sand'19874,561,485'Core making machine for making hollow core'19854,289,194'Molding machine'19814,230,172'Molding apparatus with a compressed air squeeze plate'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1987Patents assigned to SINTOKOGIO LTD (4)· patent assignee history
1980–1987Based in Okazaki, JP· patent location history
2021Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history
2021Based in Atsugi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SINTOKOGIO LTD41980–1987
NIPPON TELEGRAPH & TELEPHONE12021
Locations
LocationPatentsSpan
Okazaki, JP41980–1987
Atsugi, JP12021