Novel phenol-aldehyde/wax emulsion adhesive
CA 2448330 A1 · Owner: Leeper, Dale · Inventors: Leeper, Dale; Stratton, Richard; Phillips, Earl K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stable emulsions for use in the field of adhesives have been prepared using a non lignin, nonionic surfactant in phenol- aldehyde/wax emulsions. The adhesives have utility for binding wood particles into a unitary mass such as used in the strandboard, chipboard particle board plywood, laminated veneer , lumber and high and medium density fiberboard industries and exhibit storage stability.
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 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2024.
- 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.