Paper sheet bending apparatus in bag making machine
CA 2028337 C · Owner: Sone, Tomio · Inventors: Sone, Tomio; Sone, Masanori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a paper sheet bending apparatus in a bag making machine. The apparatus of this invention is adapted to automatically adjust width sizes of a plurality of guide plates for bending a paper sheet by making use of the computer. The computer comprises a main computer including first memory means for storing sizes of various kinds of bags to be manufactured, and a correction value command computer connected to the main computer and including second memory means for storing a plurality of conditions of the paper sheet. By making use of this correction value command computer, fine adjustment of the guide place can be easily made. The main computer is connected to drive …
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 23, 1990 and granted August 27, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2012.
- 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.