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Browse by Category: Main > Material Science
Class Information
Number: 428/840.1
Name: Stock material or miscellaneous articles > Magnetic recording component or stock > Binder media > Single magnetic layer with underlayer > Underlayer composition or structure
Description: Subject matter in which the medium has the chemical composition or arrangement of atoms of molecules of one or more of the underlayers specified.










Sub-classes under this class:

Class Number Class Name Patents
428/840.5 Chemically identified underlayer binder 57
428/840.4 Lubricant in underlayer (e.g., perfluoether, etc.) 16
428/840.2 Nonmagnetic particles in underlayer (e.g., a12o3 particles, etc.) 51


Patents under this class:
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Patent Number Title Of Patent Date Issued
8029924 Thin film template for fabrication of two-dimensional quantum dot structures Oct. 4, 2011
7754355 Magnetic recording medium Jul. 13, 2010
7638212 Magnetic recording medium Dec. 29, 2009
7553565 Magnetic recording medium Jun. 30, 2009
7541105 Epitaxial ferroelectric and magnetic recording structures including graded lattice matching layers Jun. 2, 2009
7501194 Magnetic recording media with non-magnetic support and radiation cured layer Mar. 10, 2009
7474505 Magnetic tape medium Jan. 6, 2009
7348079 Magnetic recording medium Mar. 25, 2008
7344786 Magnetic recording medium including a smooth coating layer on one side of the support Mar. 18, 2008
7341798 Magnetic tape medium Mar. 11, 2008
7282279 Magnetic recording medium including a radiation-cured material layer having a specified structure and composition Oct. 16, 2007
7259935 Magnetic tape including an intermediate layer consisting essentially of a binder Aug. 21, 2007
7141319 Method for processing the surface of an insulating article, printer head and substrate for recording medium Nov. 28, 2006
7060340 Magnetic recording medium Jun. 13, 2006
7045227 Magnetic recording medium May. 16, 2006
7041395 Magnetic recording medium May. 9, 2006
7026064 Polyester film and method for producing the same Apr. 11, 2006
7022424 Magnetic recording medium Apr. 4, 2006
6846555 Magnetic recording medium Jan. 25, 2005
6753076 Forgery-preventive identification medium and method for ascertaining the genuineness thereof Jun. 22, 2004
6602572 Magnetic recording media having a specific width relationship between the magnetic coat and primer coat and producing method thereof Aug. 5, 2003
6495252 Magnetic recording medium with superparamagnetic underlayer Dec. 17, 2002
6479131 Magnetic recording medium Nov. 12, 2002
6458452 Titanium oxide particles, substrate for magnetic recording medium and magnetic recording medium using the same Oct. 1, 2002
6403203 Magnetic recording medium and magnetic recording apparatus using the same Jun. 11, 2002
6387483 Perpendicular magnetic recording medium and manufacturing process therefor May. 14, 2002
6248489 Electrophotographic photosensitive body, intermediate transfer medium, and electrophotographic apparatus Jun. 19, 2001
6214530 Base film with a conductive layer and a magnetic layer Apr. 10, 2001
6210775 Magnetic recording medium Apr. 3, 2001
6162528 Magnetic recording medium and method for manufacturing the same Dec. 19, 2000
6103340 Magnetic recording medium Aug. 15, 2000
6051308 Magnetic recording medium and process for its production Apr. 18, 2000
6037037 Magnetic recording medium Mar. 14, 2000
5851622 Magnetic recording medium Dec. 22, 1998
5830557 Non-magnetic undercoating layer for magnetic recording medium, magnetic recording medium and non-magnetic particles Nov. 3, 1998
5827600 Magnetic recording medium Oct. 27, 1998
5811172 Magnetic recording medium Sep. 22, 1998
5811166 Magnetic recording medium Sep. 22, 1998
5795642 Magnetic recording medium Aug. 18, 1998
5795646 Magnetic recording medium Aug. 18, 1998
5792543 Magnetic recording medium Aug. 11, 1998
5780141 Magnetic recording medium Jul. 14, 1998
5763046 Magnetic recording medium Jun. 9, 1998
5750250 Hematite particles and magnetic recording medium having a non-magnetic under-coat layer containing hematite (Fe.sub.2 O.sub.3) particles. May. 12, 1998
5744216 Magnetic recording medium having an underlayer with cobalt containing particles of alpha Fe.sub.2 O.sub.3 or alpha FeOOH Apr. 28, 1998
5712028 Magnetic recording medium Jan. 27, 1998
5645917 Magnetic recording medium Jul. 8, 1997
5541008 Magnetic recording medium Jul. 30, 1996
5514464 Magnetic recording medium May. 7, 1996
5512363 Magnetic recording medium having a magnetic layer containing magnetic powder and an underlayer containing two kinds of non magnetic powder Apr. 30, 1996

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