Apparatus for manufacturing sulfuric acid by contact process
CA 1332783 C · Owner: Kotake, Shinichiro · Inventors: Nakamura, Tsumoru; Ukawa, Naohiko; Kotake, Shinichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided herein is an apparatus for manufacturing sulfuric acid by the contact process, said apparatus comprising a duct through which the feed gas containing sulfur dioxide and oxygen is passed, said duct being filled with the catalyst of parallel gas flow type for sulfuric acid in a single layer or multiple layers said, catalyst having a plurality of through holes in the lattice or honeycomb form, said through holes having an equivalent diameter of 4.4 mm to 15 mm and an opening ratio of 40% to 70%.
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
- Granted November 1, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 1, 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
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.