Toner pack and development device for use in electrophotographic apparatus
CA 2101233 C · Owner: Kouichirou, Satou · Inventors: Okano, Yoshiaki; Sakai, Chinobu; Nakamura, Tetsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A toner pack for use in an electrophotographic apparatus is formed of a polyolefin-based resin containing 30 to 50 % by weight mineral filler. This resin has a high deformability, anti generates a small amount of heat at the time of incineration thereof. Thus, the used toner pack can be disposed of together with flammable products made of paper and/or wood. Further, at the time of disposal it is, possible to fold the used toner pack to reduce its size.
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 July 23, 1993 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2015.
- 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.