Inventor

William Bruff

Inventor

V.ang.gsbygd, NO

Overview

1977–1986

Patent span

General tagging of new technological developments

Primary field (CPC Y)

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

H05Bprimary

H05BElectric heating20%

Y02PClimate change mitigation technologies in the production or processing of goods20%

Y10TTechnical subjects covered by former us classification20%

C10CWorking-up pitch, asphalt, bitumen, tar10%

C25CProcesses for the electrolytic production, recovery or refining of metals10%

F27BFurnaces, kilns, ovens or retorts in general10%

F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace10%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to ELKEM SPIGERVERKET AS (1)· patent assignee history

1977Based in Vagsbygd, NO· patent location history

1982Patents assigned to MOSAL ALU ELKEM SPIGERVERK (1)· patent assignee history

1982Based in Kristiansand, NO· patent location history

1985–1986Patents assigned to ELKEM AS (2)· patent assignee history

1985Patents assigned to CARBOINDUSTRIAL SA (1)· patent assignee history

1985Based in Vaagsbygd, NO· patent location history

1986Based in V.ang.gsbygd, NO· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations