Infrared treated tampon applicators
CA 2298253 C · Owner: Assenheimer Downs, Suzanne E. · Inventors: Norquest, Robert Clinton; Assenheimer Downs, Suzanne E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tampon applicator has a barrel and a plunger telescopically mounted within the barrel. In a preferred embodiment one or both of the barrel and plunger is made of a water dispersible material and is exposed to a source of infrared radiation to minimize surface stickiness on initial contact with moisture. In an alternative embodiment the barrel or plunger can be coated with a water dispersible material prior to exposure to infrared radiation.
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 February 8, 2000 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2022.
- 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.