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Inventor

James W. Clarke

Inventor
Tewkesbury, GB

Overview

3→
Patents
1981–1985
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C10Gprimary
C10GCracking hydrocarbon oils100%
PatentTitleYear
4,521,291'Coal extraction'19854,487,682'Coal extraction'19844,301,015'Filtration'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1985Patents assigned to COAL INDUSTRY PATENTS LTD (3)· patent assignee history
1981Based in Brockworth, GB· patent location history
1984–1985Based in Tewkesbury, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
COAL INDUSTRY PATENTS LTD31981–1985
Locations
LocationPatentsSpan
Tewkesbury, GB21984–1985
Brockworth, GB11981