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Inventor

Toshiki Ishimatsu

Inventor
Tokyo, JP

Overview

3→
Patents
1986–1992
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 3 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry25%
C22CAlloys25%
PatentTitleYear
5,139,099'Excavation tool'19925,113,954'Excavation tool'19924,619,698'Cubic boron nitride-based very high pressure-sintered material for cutting tools'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to MITSUBISHI METAL CORP (1)· patent assignee history
1986–1992Based in Tokyo, JP· patent location history
1992Patents assigned to MITSUBISHI MATERIALS CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI MATERIALS CORP21992
MITSUBISHI METAL CORP11986
Locations
LocationPatentsSpan
Tokyo, JP31986–1992