Polyamide fluidized-bed-coating powder for thin-layer fluidized-bed coating
CA 2435689 A1 · Owner: Scholten, Heinz · Inventors: Heinrich, Dirk; Scholten, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a polyamide powder for coating a metal surface by a fluidized-bed coating process wherein:, the powder has a median grain size d 50 of from 20 to 90 µm the powder has a content of fine particles whose median grain size is less than 5 µm of below 1% and the powder has, at least 75% of spherical particles in which all three spatial axes x, y and z of the particles are within ~ 10% of the same dimension. The powder is useful in a fluidized-bed coating process, especially in producing a chromate-free coating on a steel pipe, such as pipes in automobiles.
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 July 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2025.
- 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.