Magneto-plumbite ferrite particles for magnetic card, process fo

Details Magneto-plumbite ferrite particles for magnetic card, process fo Magneto-plumbite ferrite particles for magnetic card, process fo

1994-01-27

1997-02-25

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

148100, 148105, 252 6251, 252 6254, 252 6259, 252 6263, 428335, 428694B, 428694BA, 428694BH, 428900, H01F 103, C04B 3500, G11B 566, G11B 570

Patent

active

056057539

ABSTRACT:
Disclosed herein is magneto-plumbite ferrite particles for magnetic cards, which are represented by the following general formula:

REFERENCES:
patent: 4770933 (1988-09-01), Kitahata et al.
patent: 4781981 (1988-11-01), Katamoto et al.
patent: 4788095 (1988-11-01), Machida et al.
patent: 4828916 (1989-05-01), Yamamoto et al.
patent: 5055322 (1991-10-01), Yamamoto
patent: 5118575 (1992-06-01), Maekawa et al.
Abstract Derwent WPI EP 0 332 990 89-271790/38.
Abstract No. JP 62123023 Apr. 6, 1987 Appln. No. JP850262139 Nippon Zeon Co. Ltd. Magnetic Powder for Magnetic Recording.
IEEE Transactions on Magnetics vol. 26, No. 1, Jan. 1990, N.Y. pp. 12-14 Gornert et al.

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