Electrophotographic sensitive material
CA 1330632 C · Owner: Mita Industrial Co. Ltd. · Inventors: Hanatani, Yasuyuki; Nakatani, Kaname
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrophotographic sensitive material is provided which has a photosensitive layer formed on an electroconductive substrate, the photosensitive layer containing a pyrrolopyrrole type compound represented by the following general formula (1) and a benzidine derivative represented by the following general formula (2) : (1), (2), In the general formulas (1) and (2) R1, R2, R3, R4, R5 R6 R7 R8 R9 R10, ?, m n, o, p and q have the, same meanings as defined in the text of the specification.
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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
- Granted July 12, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2011.
- 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.