Photosensitive member for electrophotography
CA 1293639 C · Owner: Nozomi, Mamoru · Inventors: Sasakawa, Setsuko; Nozomi, Mamoru; Nukui, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photosensitive member for electrophotography comprising a photosensitive layer on a conductive substrate the photosensitive layer containing as a binder resin a modified polycarbonate resin having the repeating structural units represented by the following general formulae (1) and (2):, ............ (1), wherein R1 and R2 are selected from a hydrogen atom an alkyl, group having 1-3 carbon atoms and a halogen atom at least, one of R1 and R2 being the alkyl group and R3 and R4 inde-, pendently represent an alkyl group having 1-3 carbon atoms or a hydrogen atom, and, ............ (1) wherein R3 and R4 are the same as defined in the above formula (1). The ratio of the structural unit (1) to …
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
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- 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.