Oxide-coated carriers and preparation and use thereof
CA 1320109 C · Owner: Schmitt, Franz-Ulrich · Inventors: Ostertag, Werner; Czech, Erwin; Schmitt, Franz-Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel carrier which is stable and effective over long cycle times (6 x 105 prints), has an iron oxide coating of the formula (FeO)x . Fe2O3 where x = 0.1 - 1 and is obtained by treating steel cores (or balls) with defined small amounts of sulfuric acid of defined concentration partial oxidation, of the cores thus treated and drying at 60-150°C at ? 100 mbar.
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 July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2010.
- 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.