Whole heated, chemical containing body, chemical containing body retaining receptacle, chemical heating, volatilizing apparatus and indicator for a heat volatilizing chemical
CA 2473552 A1 · Owner: Yamasaki, Satoshi · Inventors: Yamasaki, Satoshi; Ishizuka, Tomoko; Yamamoto, Kazunori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A formed material containing a chemical for vaporizing the chemical over a long time through heating it, which is of the type wherein the whole material is heated, and has a thickness of 3 mm or more characterized in that it , exhibits a heat loss percentage L (L = (h - t)/h X 100 wherein h and t , represent a heating temperature and the lowest temperature of the formed material, respectively) of 70 % or less; a container for holding the formed material; an indicator suitable for showing the degree of consumption of the chemical in the material; and a device for heating and transpiring a chemical which is suitable for heating the formed material. The container has one or more holes …
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 September 6, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2023.
- 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.