Wiper blade rubber
CA 1252603 A · Owner: Nippondenso Co. Ltd. · Inventors: Aritake, Masanori; Sugita, Hiroshi; Iwasa, Tadanobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wiper blade rubber is disclosed The wiper blade rubber comprises a matrix formed of rubber made preponderantly of EPDM and vulcanized with a peroxide and a lip part having the portions thereof for sliding contact with the outer surface of a wind shield formed of chlorinated diene type rubber. The lip part has the opposite lateral sides in the direction of thickness of the leading end thereof formed of diene type rubber containing a chlorinated layer on the surface thereof with the matrix, exposed to sight at the leading edge of the lip part between the opposite lateral sides of diene type rubber. The diene type rubber in each of the opposite lateral sides has the outer surface thereof …
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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 April 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2006.
- 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.