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Inventor

Masaie Tohkai

Inventor
Ibaraki, JP

Overview

3→
Patents
1985–1992
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.

B29Cprimary
B29CShaping or joining of plastics22%
C23CCoating metallic material22%
F16JPistons22%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests22%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry11%
PatentTitleYear
5,088,908'Continuous vacuum processing apparatus'19924,551,310'Continuous vacuum treating apparatus'19854,501,428'Roll seal boxes for continuous vacuum treating apparatus'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1992Patents assigned to HITACHI LTD (3)· patent assignee history
1985Patents assigned to SHINETSU CHEMICAL CO (2)· patent assignee history
1985Based in Ibaraki, JP· patent location history
1992Based in Ryugasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD31985–1992
SHINETSU CHEMICAL CO21985
Locations
LocationPatentsSpan
Ibaraki, JP21985
Ryugasaki, JP11992