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Inventor

Hisao Yoshikawa

Inventor
Tokorozawa, JP

Overview

3→
Patents
1976–1985
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B23Qprimary
B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling33%
B24BMachines, devices, or processes for grinding or polishing33%
G04FTime-interval measuring17%
H03HImpedance networks, e.g. resonant circuits17%
PatentTitleYear
4,536,993'Grinding machine'19854,481,742'Machine tool elevating and guiding apparatus'19843,988,621'Supporting structure for a thickness-shear type quartz oscillator'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1985Patents assigned to CITIZEN WATCH CO LTD (3)· patent assignee history
1976–1985Based in Tokorozawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CITIZEN WATCH CO LTD31976–1985
Locations
LocationPatentsSpan
Tokorozawa, JP31976–1985