Oxygen-absorbing component, oxygen absorbent package and oxygen-absorbing multilayered body containing same
CA 2241775 A1 · Owner: Mabuchi, Yoshinori · Inventors: Mabuchi, Yoshinori; Hirata, Masukazu; Otsu, Kazuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed a powdery or particulate oxygen-absorbing component excellent in oxygen-absorbing performance which can be used even in a dry state; an oxygen absorbent package; an oxygen-absorbing multilayered body each containing this oxygen-absorbing component; and a sheet-like and a film-like oxygen-absorbing multilayered body containing the same; and methods for preparing them. Specifically the oxygen-absorbing component, comprises a crosslinked polymer having carbon-carbon unsaturated bonds and is characterized by high heat resistance and easiness of grinding due to the crosslinked structure.
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 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2020.
- 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.