Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-08-30
2005-08-30
Le, H. Thi (Department: 1773)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S690000, C428S690000, C428S900000
Reexamination Certificate
active
06936356
ABSTRACT:
A magnetic recording medium comprising a non-magnetic support, at least one primer layer formed on one surface of the non-magnetic support, a magnetic layer formed on the primer layer, and a backcoat layer formed on the other surface of the non-magnetic support, wherein the magnetic layer has a thickness of 0.30 μm or less and a centerline average surface roughness Ra of 3.2 nm or less, and (P1−P0) is 30 nm or less and (P1−P20) is 5 nm or less in which P0is an averaged height of projections of the magnetic layer, and P1, P2, - - - and P20are heights of the highest, the second highest, - - - and the 20th highest projections of the magnetic layer, respectively.
REFERENCES:
patent: 5009929 (1991-04-01), Iida et al.
patent: 5169703 (1992-12-01), Mitazaki et al.
patent: 5512350 (1996-04-01), Ryoke et al.
patent: 5718964 (1998-02-01), Naoe et al.
patent: 5721010 (1998-02-01), Hinoki et al.
patent: 5827599 (1998-10-01), Murao et al.
patent: 5976714 (1999-11-01), Arita et al.
patent: 6017605 (2000-01-01), Yamazaki et al.
patent: 6251509 (2001-06-01), Kawamata et al.
patent: 6780531 (2004-08-01), Tani et al.
patent: 63-259830 (1988-10-01), None
patent: 1-201824 (1989-08-01), None
patent: 2-265016 (1990-10-01), None
patent: 4-69812 (1992-03-01), None
patent: 5-73883 (1993-03-01), None
patent: 6-103562 (1994-04-01), None
patent: 6-180835 (1994-06-01), None
patent: 11-353634 (1994-06-01), None
patent: 6-309663 (1994-11-01), None
patent: 6-342515 (1994-12-01), None
patent: 7-296360 (1995-11-01), None
patent: 7-296374 (1995-11-01), None
patent: 8-336941 (1996-12-01), None
patent: 9-63043 (1997-03-01), None
patent: 10-3651 (1998-01-01), None
patent: 11-66544 (1999-03-01), None
patent: 11-175951 (1999-07-01), None
patent: 11-238225 (1999-08-01), None
patent: 2000-11368 (2000-01-01), None
patent: 2000-40218 (2000-02-01), None
patent: 2000-90430 (2000-03-01), None
patent: 2000-99940 (2000-04-01), None
patent: 2000-149242 (2000-05-01), None
Makita Yoshiyuki
Tani Masakazu
Yoshida Ken-ichiro
Yoshimoto Norihisa
Birch & Stewart Kolasch & Birch, LLP
Hitachi Maxell Ltd.
Le H. Thi
LandOfFree
Magnetic recording medium comprising a magnetic layer having... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic recording medium comprising a magnetic layer having..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium comprising a magnetic layer having... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3461032