Flexible patterned mask with regions of differing opacity
CA 2696880 A1 · Owner: Trokhan, Paul D. · Inventors: Cabell, David W.; Trokhan, Paul D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fibrous structure and a process for making such fibrous structures are disclosed. The , fibrous structures have at least a first region defining a first plane and having a first , elevation, and a second region outwardly extending from the first plane to define a , second elevation. The second region comprises a plurality of fibrous pillows. At least , some of the fibrous pillows have fibrous domes and fibrous cantilever portions laterally , extending therefrom at the second elevation. The cantilever portions are elevated from , the first plane to form pocket therebetween.
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 October 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2023.
- 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.