Drinking straw
CA 1331586 C · Owner: Panagopoulis, Petros · Inventors: Panagopoulis, Petros
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title of the Invention: DRINKING STRAW Inventor: Petros Panagopoulis, Abstract of the Invention A drinking straw as provided having an end which is sealed by means of a fracturable membrane with a closure member located at such end covering the membrane and having means for fracturing the membrane when it is moved towards the membrane.
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 August 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 2011.
- 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.