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Expired Canadian patentCanada

High speed airship

CA 2533439 C · Owner: Nagy, Imre · Inventors: Nagy, Imre

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A high speed airship (10) with multiple inflatable chambers (11) arranged in a multiplicity of tubular clusters to enhance structural strength and to create a centrally located passenger or cargo tunnel (18) to increase passenger safety. A conical shaped rigid frame front cabin (14) attached to the front end of the airship, and a conical shape rigid frame aft cabin (15) attached to the aft end of the airship, designed to reduce aerodynamic drag to achieve , high speed, and to be able to land on water. Specially designed multiple sections with multiple inner tubes to increase safety. Helium recovery system to control balance and buoyancy without the loss of helium and to eliminate …

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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

  • Filed August 15, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 15, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 15, 2003
GrantedJanuary 3, 2012
Term endedAugust 15, 2023
Patent numberCA 2533439 C
Classification (IPC)B64B1/34

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedAug 15, 2003Patent grantedJan 3, 2012Term endedAug 15, 2023

Sources & verification

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