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Expired Canadian patentCanada

Apparatus and method for the reuse and treatment of waste water in fiber glass manufacturing operations

CA 1162048 A · Owner: Knauf Fiber Glass Gmbh · Inventors: Helbing, Clarence H.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A method and system of treating water used in the manufacture of fiber glass insulation products which is characterized by maintaining the water in continued motion, so that solids never build up with the consequent clogging of orifices and spray nozzles at any point in the system. Further, water is always discharged in an environmentally acceptable condition at an elevated atmospheric location, and never at ground level the, only ground level discharge from the system being solids which are suitable for dry land fill disposal.

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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 February 14, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1980
GrantedFebruary 14, 1984
Term endedFebruary 14, 2001
Patent numberCA 1162048 A
Classification (IPC)C03B37/06 +1 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedNov 19, 1980Patent grantedFeb 14, 1984Term endedFeb 14, 2001

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.