Dry powder mixes comprising phase change materials
CA 2094583 A1 · Owner: University Of Dayton · Inventors: Salyer, Ival O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A free flowing conformable powder-like mix of silica, particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items medical, wraps, tree wraps, garments, quilts and blankets and, particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders and for, preventing brake fade in automobiles buses, trucks and aircraft.
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 April 21, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2015.
- 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.