Process for producing flux for brazing
CA 1308632 C · Owner: Showa Denko K.K. · Inventors: Sato, Shoichi; Tazaki, Seiji; Osame, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flux for brazing is prepared from 31.5% to 56.2% of KF and 63.5% to 43.8% of at least one of y-AlF3 and finely divided .beta.-AlF3. The KF is dissolved in water, and the AlF3 is then placed into the resulting KF aqueous solution to react the KF with the AlF3. The reaction product is dried.
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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
- 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.