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Class Information
Number: 428/844.2
Name: Stock material or miscellaneous articles > Magnetic recording component or stock > Binder media > Single magnetic layer > With nonmagnetic particles (e.g., hematite particles, polystyrene, and polyisoprene copolymer, etc.) > Only single-type nonmagnetic particle > Surface modified particle (e.g., aluminum oxide coated particles, etc.)
Description: Subject matter in which the magnetic layer contains nonmagnetic particles whose surfaces have been altered.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6667120 |
Magnetic recording medium, non-magnetic acicular composite particles and process for producing the particles |
Dec. 23, 2003 |
| 6352776 |
Magnetic recording medium, non-magnetic acicular black iron-based composite particles and process for producing the particles |
Mar. 5, 2002 |
| 6350505 |
High-density acicular hematite particles, non-magnetic undercoat layer and magnetic recording medium |
Feb. 26, 2002 |
| 6299973 |
Acicular hematite particles having a low sodium content and their use in a magnetic recording medium |
Oct. 9, 2001 |
| 6117540 |
Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom |
Sep. 12, 2000 |
| 5080982 |
Magnetic recording medium |
Jan. 14, 1992 |
| 4917947 |
Magnetic recording medium |
Apr. 17, 1990 |
| 4895763 |
Magnetic recording medium and non-aqueous suspension of inorganic solid particles for use in the production of the same |
Jan. 23, 1990 |
| 4710424 |
Magnetic disk and method of making same |
Dec. 1, 1987 |
| 4634627 |
Magnetic recording medium comprising a surface-treated abrasive |
Jan. 6, 1987 |
| 4603080 |
Magnetic recording media comprising fine particles of organosilica gel in the magnetic recording layer |
Jul. 29, 1986 |
| 4595631 |
Magnetic recording media comprising carbon black-adsorbed metal oxide particles in a magnetic recording layer |
Jun. 17, 1986 |
| 4590127 |
Abrasive used in magnetic recording medium and production thereof |
May. 20, 1986 |
| 4584243 |
Abrasive, production thereof and use thereof in magnetic recording medium |
Apr. 22, 1986 |
| 4578314 |
Magnetic recording medium and method for manufacture thereof |
Mar. 25, 1986 |
| 4320159 |
Magnetic recording medium |
Mar. 16, 1982 |
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