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Inventor

Robert Duret

Inventor
Maurepas, FR

Overview

4→
Patents
1985–1994
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H01Jprimary
H01JElectric discharge tubes or discharge lamps43%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients14%
C09DCoating compositions, e.g. paints, varnishes or lacquers14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
5,334,907'Cooling device for microwave tube having heat transfer through contacting surfaces'19945,236,750'Apparatus intended to contain hydrofluoric acid, with a metal wall coated with a protective material'19934,798,993'Electron gun for electronic tubes'19894,559,474'Travelling wave tube comprising means for suppressing parasite oscillations'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1989Patents assigned to THOMSON CSF (2)· patent assignee history
1985–1994Based in Maurepas, FR· patent location history
1989Based in Coignieres, FR· patent location history
1993Patents assigned to ANTIROUILLE (1)· patent assignee history
1993Based in Brindas, FR· patent location history
1994Patents assigned to THOMSON TUBES ELECTRONIQUES (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
THOMSON CSF21985–1989
ANTIROUILLE11993
THOMSON TUBES ELECTRONIQUES11994
Locations
LocationPatentsSpan
Maurepas, FR21985–1994
Brindas, FR11993
Coignieres, FR11989