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Expired Canadian patentCanada

Apparatus and method for withdrawing and dewatering slag from a gasification system

CA 2395079 C · Owner: Ge Energy (Usa) Llc · Inventors: Tsang, Chih-Hao M.; Lee, Katherine S.; Vassantachart, Pravit

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Abstract From the Canadian patent

The present invention relates to an apparatus and method for withdrawing and dewatering slag from a gasification system. In particular the present , invention relates to a conveying lockhopper and method of using the conveying lockhopper to collect slag and other waste byproducts from the gasifier of a gasification system. The conveying lockhopper is configured to receive slag from a gasifier, simultaneously extract and dewater the slag and expel the , processed slag directly into an awaiting container suitable for carrying the processed slag away. The conveying lockhopper generally comprises a housing with inlet and outlet valves to receive and expel slag respectively. The , housing …

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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

  • Filed August 31, 2000 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 31, 2000
GrantedNovember 13, 2012
Term endedAugust 31, 2020
Patent numberCA 2395079 C
Classification (IPC)C10J3/72 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedAug 31, 2000Patent grantedNov 13, 2012Term endedAug 31, 2020

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