Clean box
CA 2264226 A1 · Owner: Yoshida, Minoru · Inventors: Doi, Takeshi; Yoshida, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clean box capable of being effectively applied to a room reduced. in cleanliness as well. The clean box includes a box body made of synthetic resin end a sealedly closable cover made of synthetic resin. Tine clean box is subject on an outer surface thereof to an antistatic treatment.
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 March 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2021.
- 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.