Tire tread with improved noise properties
CA 2054102 A1 · Owner: Landers, Samuel Patrick · Inventors: Attinello, John Steven; Glover, William Eugene; Landers, Samuel Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A tire tread which optimizes noise properties of a tire is provided. The tread has radiused leading and optionally radiused trailing lug edges. In a preferred embodiment the tire tread also has arcuate lateral grooves such that no two lugs are in alignment on a lateral groove. Also, the tread may be divided into at least two annular portions and the annular tread portions may be skewed such that no two lugs in the tread are in lateral alignment.
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 October 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2013.
- 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.