Structured surfaces with properties which inhibit cell adhesion and cell proliferation
CA 2323719 A1 · Owner: Schleich, Bernhard · Inventors: Hommes, Peter; Schleich, Bernhard; Oles, Markus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are articles having structured (i.e. rough) surfaces which inhibit proliferation and adhesion of eukaryotic cells such as fibroblasts. The structured surfaces have elevations with an average height of from 50 nm to 10 µm and an average separation of from 50 nm to 10 µm and, are made of materials having a surface energy of at least 20 mN/m as measured in an unstructured (i.e. smooth) form. The structured surfaces may be produced by a variety of processes such as an embossing process and the articles may be used e.g. as cell-culture vessels.
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 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 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.