EPITAXIAL PROCESS OF FORMING FERRITE, FE3O4 AND .gamma. FE2O3 THIN FILMS ON SPECIAL MATERIALS
CA 1062657 A · Owner: International Business Machines Corporation · Inventors: Tu, King-Ning; Bajorek, Christopher H.; Rosenberg, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
EPITAXIAL PROCESS OF FORMING FERRITE, Fe3O4 AND .gamma.Fe2O3 THIN FILMS ON SPECIAL MATERIALS Abstract of the Disclosure, A first thin film of appropriate texture lattice, constant, and crystal structure such as body centered cubic, vanadium or chromium with (110) texture is deposited upon a rigid or flexible substrate forming a plurality of polycrystals. A ferrite such as magnetite (Fe3O4) is sputtered from a target onto the first thin film forming a mixture of .gamma.Fe2O3 and Fe3O4 substantially completely without formation of Fe or other oxides of iron, providing good magnetic characteristics and resistance to corrosion. The substrate temperature can be maintained as low as 200°C for …
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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
- 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.