Method and apparatus for producing a continuous web from a block of material
CA 2304164 A1 · Owner: Smith, Charles Zell Iii · Inventors: Wilhelm, Eric Richard; Steller, Robert John; Sabatelli, David Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus an a method for forming a continuous web of material from a block (1) of material is disclosed. The block (1) is preferably a cylindrical block having a base (16) and a generally vertical central axis (2) extending generally orthogonally from the base (6). The apparatus comprises a rotatable platen (20) such that the block (1) may be rotatably supported and means (40) , for displacing portions of the block (1) defining a displaced portion (42) near the base (6) of the block. A blade (30) is positioned generally parallel to the central axis (2) of the block, the blade (30) positioned to cut into the block (1) a predetermined distance rfrom the central axis (2). The blade …
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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
- Filed September 22, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2020.
- 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.