Essentially amorphous, non-chlorinated polymeric barrier films and method of using such films
CA 2377235 A1 · Owner: Bonekamp, Jeffrey E. · Inventors: Regnier, Francois J. F.; Tung, Harvey C.; Bonekamp, Jeffrey E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Essentially amorphous non-chlorinated polymeric films are provided which are effective barriers to odors and organic molecules making them particularly , useful for ostomy bags (colostomy ileostomy), trans-dermal delivery systems (TDDS), cosmetic patches, incontinence bags medical collection bags, parenteral solution bags and food packaging, as well as for protective clothing and soil fumigation applications. The barrier layers of the present invention can be used as monolayers or can be a component film of a multilayer structure. The barrier films may be used with or without other film layers that promote reduced noise emission. Alternately single and multi-layer films , may omit the …
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, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 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.