Dual density foam inking member and method of making the same
CA 2124369 A1 · Owner: Sarada, Thyagaraj · Inventors: Bernard, Richard A.; Bonaccorso, William H. Jr.; Sarada, Thyagaraj
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an inking member made from a single foraminous material. The foraminous material such as polyurethane, is, placed into a press. The top platen of the press is raised to a temperature of 380 to 450° F and the material is subjected to a pressure of 8,618kg/force on a 165mm ram load for a period approximately of 3.5 minutes. What results is an inking member having small pores in the area adjacent to the heated platen and larger pores in those portions of the pad that are distant from the heated platen. This yields a foraminous member that has utility as an inking, member with the small pore portion acting as an ink metering layer and the large pore portion acting as …
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 May 26, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2016.
- 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.