Patent Yard Sign in
Expired Canadian patentCanada

Control system for subsea well-heads

CA 1109783 A · Owner: Tecnomare S.P.A. · Inventors: Morganti, Emilio; Banzoli, Valeriano; Minardi, Paolo

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

CONTROL SYSTEM FOR SUBSEA WELL-HEADS, ABSTRACT OF THE DISCLOSURE : A control system for subsea oil wells, more particularly well heads is disclosed, which comprises in combination an, electronic command and control unit a valve actuating hydraulic, electric unit a power generator unit, interconnection devices for interconnecting the hydraulic lines for controlling the whole system from the surface with the hydraulic units for commanding the electric-hydraulic unit.

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1978
GrantedSeptember 29, 1981
Term endedSeptember 29, 1998
Patent numberCA 1109783 A
Classification (IPC)E21B43/01 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 31, 1978Patent grantedSep 29, 1981Term endedSep 29, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.