Apparatus for treating photographic process waste liquor through concentration by evaporation
CA 1330934 C · Owner: Konica Corporation · Inventors: Kurematsu, Masayuki; Goto, Nobutaka; Koboshi, Shigeharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for treating photographic process waste liquor through concentration by evaporation, Disclosed is an apparatus for treating photographic process waste liquor through concentration by evaporation comprising an evaporation vessel and a heating device wherein:, i) the heating device has a heat density of about 17.2 kcal/cm2 or less; or, ii) the apparatus is provided with a device for intermittently feeding the waste liquor according to a signal from a device for detecting the quantity of the waste liquor in the evaporation vessel. According to this invention provided is an apparatus for, treating photographic process waste liquor through concentration by evaporation, that may involve …
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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 July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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
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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.