Magnetic transducer head utilizing magneto resistance effect
CA 1161950 A · Owner: Sony Corporation · Inventors: Soda, Yutaka; Sekiya, Tetsuo; Uchida, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic transducer head utilizing a thin film magneto-resistance effect element is disclosed in which the amount of a DC bias magnetic field is so selected that only the end portion of the thin film magneto-resistance effect element serving as a contact surface with a magnetic medium is effectively given with sensitivity and the element is saturated in the vicinity of its central portion in its width direction.
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 February 7, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 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.