Excavating equipment
CA 2308607 A1 · Owner: Graham, Andrew Herbert · Inventors: Graham, Andrew Herbert; Adsley, Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Excavating equipment (10) for excavating material which may be contaminated with radioactive material incorporates a bucket (12) or grab to convey excavated material. The bucket (12) incorporates a gamma ray detector (26) within a hollow projection (24) so the, detector (26) is surrounded by the excavated material when the bucket (12) is full. This enables the radioactive contamination within a bucket-full of material to be assayed straight after it has been excavated, so the operator of the excavating equipment (10) can rapidly decide how each bucket-full should be disposed of.
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
- Filed May 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.