Tape reel
CA 1094036 A · Owner: Sony Corporation · Inventors: Nemoto, Tsuneo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Tape reel made of synthetic resin includes a generally cylindrical reel hub on which a tape is wound and, a generally circular flange integrally connected with one end of the reel hub. The opening of the other end of the reel hub is substantially closed with a rib portion and a sub-flange is, connected with the other end of the reel hub by thermally welding a projection of the sub-flange with the rib portion. A relatively thin cylindrical portion is formed on the other end of the reel hub and the top of the cylindrical portion is separated from the sub-flange.
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 January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- 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.