LexDanaLexDanabeta
Inventor

Haruhiko Honda

Inventor
Hitachi, JP

Overview

2→
Patents
1981
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

C23Cprimary
C23CCoating metallic material40%
Y10TTechnical subjects covered by former us classification40%
E21BEarth or rock drilling20%
PatentTitleYear
4,269,899'Surface hafnium-titanium carbide coated hard alloy and method'19814,264,682'Surface hafnium-titanium compound coated hard alloy material and method of producing the same'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to HITACHI METALS LTD (2)· patent assignee history
1981Based in Hitachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI METALS LTD21981
Locations
LocationPatentsSpan
Hitachi, JP21981