Dust-free embedding compound for precision castings and a process for the production of this embedding compound
CA 2053138 A1 · Owner: Kump, Ulrich · Inventors: Kump, Ulrich; Gunlach, Klaus Peter; Gantert, Gerlinde
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dust-free, embedding compounds for the production of precision castings consisting of water-soluble phosphates magnesium oxide and silicon dioxide are obtained by dividing the embedding compound into two components a and b component, a containing all the magnesium oxide optionally part of the, silicon dioxide and in the presence of silicon dioxide, 0.4 to 6% by weight of a hydrophilic organic solvent and, component b containing the phosphate the rest of the silicon, dioxide and at least 0.5% by weight water.
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 October 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 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.