Reusable-evacuable enclosure
CA 2179035 C · Owner: New West Products, Inc. · Inventors: Hadden, David M.; Sweeney, Gerald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reusable, evacuable enclosure comprising a bag (4) with an opening (12) in which to place articles such as clothing or linen and a one-way valve in a surface of the bag. The articles may be placed in the bag and sealed from the surrounding environment by placing a seal (8) across the opening. The excess air in the bag may then be removed by placing a cylindrical attachment of a household vacuum cleaner over the one-way valve (6). Once the excess air is extracted a cap is placed over the valve to ensure a permanent seal. Removal of excess air and moisture from the bag protects the stored article against insects bacteria, mildew, corrosion. etc. A variety of seals for closing the bag are …
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 December 14, 1994 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 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.