Film for first-aid sticking plaster
CA 2126021 C · Owner: Tabata, Hironori · Inventors: Uenomachi, Kiyomi; Ogasa, Masao; Matsumoto, Hideshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film for a first-aid sticking plaster consisting of polypropylene resin having a weight average molecular weight within the range of 80,000 to 500,000 with resin, elution quantities according to cross fractionation chromatography in ranges of 45 to 80 percent by weight at 0 to 10°C, 5 to 35 percent by weight at 10 to 70°C 1 to 30, percent by weight at 70 to 95°C and 5 to 35 percent by, weight at 95 to 125°C.
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 June 16, 1994 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2016.
- 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.