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Inventor

Shigetsune Aoyama

Inventor
Aichi, JP

Overview

4→
Patents
1976–1987
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

F16Fprimary
F16FSprings29%
B23DPlaning14%
B60GVehicle suspension arrangements14%
G01NInvestigating or analysing materials by determining their chemical or physical properties14%
G10KSound-producing devices14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
4,637,594'Leaf spring construction'19874,512,559'Leaf spring construction'19854,208,917'Device for inspecting spot welds'19803,958,732'Method for breaking steel rod into billets'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1987Patents assigned to TOYODA CHUO KENKYUSHO KK (4)· patent assignee history
1976–1980Based in Okazaki, JP· patent location history
1985–1987Patents assigned to AICHI STEEL WORKS LTD (2)· patent assignee history
1985Patents assigned to CHUO HATSUJYO KABUSHIKI KAISHA (1)· patent assignee history
1985–1987Based in Aichi, JP· patent location history
1987Patents assigned to HORIKIRI SPRING MFG (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOYODA CHUO KENKYUSHO KK41976–1987
AICHI STEEL WORKS LTD21985–1987
CHUO HATSUJYO KABUSHIKI KAISHA11985
HORIKIRI SPRING MFG11987
Locations
LocationPatentsSpan
Aichi, JP21985–1987
Okazaki, JP21976–1980