Distributor for packed tower
CA 2042884 C · Owner: Cameron, Gordon M. · Inventors: Cameron, Gordon M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: DISTRIBUTOR FOR PACKED TOWER, ABSTRACT A distributor for distributing sulphuric acid on a packed tower. The distributor has an array of horizontal parallel distributing pipes in a single horizontal plane spanning a tower containing a packing and located above the packing. The pipes extend through the tower shell at one end and are accessible through a clean-out port at the other end. Feed enters the pipes at one end and the cleanout port at the other end permits cleaning without entering the tower. There are holes in the pipes arranged in a number of rows each angled downwardly. Each hole has a simple corrosion resistant insert to protect against hole erosion.
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 May 17, 1991 and granted May 4, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2013.
- 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.