Magnetic head and method of producing same
CA 1185367 A · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Senno, Harufumi; Sakakima, Hiroshi; Hirota, Eiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic head and a method of producing same wherein the magnetic head includes a head core formed of metallic magnetic material and has a head gap formed in a portion of the head core adapted to be positioned against a recording medium, and windings mounted on the head core. The material forming the head core is amorphous and has the following composition: (Col-xM'x)a Zrb Sic Bd, where M' is at least one element selected from the group consisting of Cr Mn, Fe Ni, Nb, Mo, W and Ti, 0.03 < x < 0.15 3 < b < 25, 0 < c < 20, 0 < d < 5, and a + b + c + d = 100.
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 April 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2002.
- 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.