Expired Australian patentAustralia
Tunnel excavator
AU 1999032243 · Applicant: Ishikawajimaharima Heavy Industries Co Ltd
Overview
Drawings and full text
Its specification, documents and status are on IP Australia's AusPat.
Open the AusPat recordRead the whole patent
Listed from its IP Australia record in Patent Yard's archive of Australian patents past their term. Its claims, description and drawings are in the AusPat record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 26, 1999 and granted August 29, 2002. An Australian standard patent lasts 20 years from its date of patent, which is at most a year after this filing, so its term ended by May 26, 2020.
- A pharmaceutical extension adds at most five years, so even that would have ended by May 26, 2025.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 26, 1999
GrantedAugust 29, 2002
Term ended byMay 26, 2020
Application numberAU 1999032243
Classification (IPC)E21D9/10 +2 more
Timeline
Timeline From IP Australia dates
Sources & verification
Official IP Australia records
Everything on this page comes from the IP Australia record linked above. Data from IP Australia's IPGOD, licensed under CC BY 2.5 AU.