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Inventor

Christopher G. Chatfield

Inventor
Tumba, SE

Overview

4→
Patents
1981–1996
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 as inventor

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

C23Cprimary
C23CCoating metallic material57%
Y10TTechnical subjects covered by former us classification43%
PatentTitleYear
5,543,176'CVD of Al.sub.2 O.sub.3 layers on cutting inserts'19965,071,696'Coated cutting insert'19914,399,168'Method of preparing coated cemented carbide product'19834,282,289'Method of preparing coated cemented carbide product and resulting product'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1996Patents assigned to SANDVIK AB (3)· patent assignee history
1981–1983Based in Stockholm, SE· patent location history
1983Patents assigned to SANTRADE LTD (1)· patent assignee history
1991–1996Based in Tumba, SE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SANDVIK AB31981–1996
SANTRADE LTD11983
Locations
LocationPatentsSpan
Tumba, SE21991–1996
Stockholm, SE21981–1983