Cold air supply unit
CA 2178221 C · Owner: Kajima Corporation · Inventors: Nikai, Isao; Uda, Motohisa; Shindo, Naoki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mobile cold air supply unit which comprises as, housed in a single casing, an air compressor-expander constituted of an integral combination of a motor an air, compressor and an air expander an air-to-water heat, exchanger and an air-to-air heat exchanger is furnished in, the casing with air tubing for interconnecting the aforesaid components at an air pressure not higher than 5 kg/cm2, and is provided with a cold air discharge connection, a return air intake connection a cooling water, outlet connection and a cooling water intake connection.
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 4, 1995 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2017.
- 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.