Microwave vacuum dryer apparatus and method for microwave vacuum drying
CA 1248348 A · Owner: Osaka Gas Company, Limited · Inventors: Shimada, Syusaku; Abe, Kenichi; Kikuchi, Morio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Slot-array antennas are connected by waveguides to microwave generators and are disposed within a vacuum drying tank of a drying apparatus. Blocking plates are mounted in the waveguides so as to keep the wveguides airtight thereby maintaining an atmospheric pressure within the waveguide portions near the microwave generator during operation of the apparatus. The slot-array antennas have heat pipes attached to the sides of said antennas so that a heat radiation may be effected simultaneously with the microwave heating.
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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
- Granted January 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2006.
- 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.