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Inventor

John S. Stevenson

Inventor
Ruardean, GB

Overview

2→
Patents
1976–1980
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.

C23Dprimary
C23DEnamelling of, or applying a vitreous layer to, metals20%
C23FNon-mechanical removal of metallic material from surface20%
C25DProcesses for the electrolytic or electrophoretic production of coatings20%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1020%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
4,207,149'Gold electroplating solutions and processes'19803,957,669'Metal treatment'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to OXY METAL FINISHING CORP (1)· patent assignee history
1976–1980Based in Ruardean, GB· patent location history
1980Patents assigned to ENGELHARD MIN & CHEM (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ENGELHARD MIN & CHEM11980
OXY METAL FINISHING CORP11976
Locations
LocationPatentsSpan
Ruardean, GB21976–1980