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Echouboulains, France

Bernard Doremus

This inventor holds 5 USPTO granted patents. Top assignee: Schlumberger Technology Corporation. Active years: 1976-1987.

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 4

Forward Citations = 99(Granted Patents)

Location History:

Fontainebleau, FR (1976)
Echouboulains, FR (1984 - 1987)

Company Filing History:

5 out of 10,698

Schlumberger Technology Corporation

Years Active: 1976-1987

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4658904 - Subsea master valve for use in well testing (1987-04-21),

2. 4651828 - Safety valve in particular for closing an oil well (1987-03-24),

3. 4577662 - Plug valve equipped with pressure equalization means (1986-03-25),

4. 4442902 - Remote hydraulic control method and apparatus, notably for underwater (1984-04-17),

5. 3950021 - Pulling and running tool (1976-04-13),

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