Overglaze inks
CA 1159851 A · Owner: Rca Corporation · Inventors: Hang, Kenneth W.; Prabhu, Ashok N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 75,805, IMPROVED OVERGLAZE INKS, ABSTRACT OF THE DISCLOSURE Improved thick-film overglaze inks useful in constructing multilayer integrated circuits on circuit boards, particularly porcelain-coated metal circuit boards, are provided. The subject inks comprise: a glass consisting of lead oxide, a modifier component consisting of the oxides of cadmium, zinc, barium and antimony and a glass-forming component consisting of aluminum oxide boron trioxide and silicon dioxide; a suitable organic vehicle and, if desired, a colorant oxide.
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 January 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2001.
- 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.