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Class Information
Number: 428/681
Name: Stock material or miscellaneous articles > All metal or with adjacent metals > Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) > Transition metal-base component > Group viii or ib metal-base component > Fe-base component
Description: Subject matter in which a component has 40 percent or more of iron.










Sub-classes under this class:

Class Number Class Name Patents
428/684 Containing 0.01-1.7% carbon (i.e., steel) 186
428/682 Next to fe-base component 175


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
4891278 Ferrromagnetic thin film and magnetic head using it Jan. 2, 1990
4883723 Hot dip aluminum coated chromium alloy steel Nov. 28, 1989
4878132 Thermomagnetic recording method applying power modulated laser on a magnetically coupled multi-layer structure of perpendicular anisotropy magnetic film Oct. 31, 1989
4871708 Pyrophorically activated iron or nickel foil and method of treating same Oct. 3, 1989
4851296 Process for the production of multi-metallic amorphous alloy coatings on a substrate and product Jul. 25, 1989
4847166 Slide parts Jul. 11, 1989
4806437 Vibration isolating mount Feb. 21, 1989
4800135 Hot dip aluminum coated chromium alloy steel Jan. 24, 1989
4784922 Corrosion-resistant clad steel and method for producing the same Nov. 15, 1988
4762755 Ferromagnetic material and a magnetic head using the same material Aug. 9, 1988
4753853 Double-layered magnetooptical recording medium Jun. 28, 1988
4748089 Multilayered ferromagnetic amorphous alloy film and magnetic head employing the same May. 31, 1988
4746408 Multi layer corrosion resistant coating May. 24, 1988
4746582 Ceramic-metal composite body May. 24, 1988
4727005 Magneto-optical recording medium having amorphous artificially layered structure of rare earth element and transition metal element Feb. 23, 1988
4727000 X-ray dispersive and reflective structures Feb. 23, 1988
4725512 Materials transformable from the nonamorphous to the amorphous state under frictional loadings Feb. 16, 1988
4707417 Magnetic composite film Nov. 17, 1987
4699827 Electric device provided with a silk-screening dielectric coated conductive laminate Oct. 13, 1987
4693943 Magnetooptical recording medium Sep. 15, 1987
4677032 Vertical magnetic recording media with multilayered magnetic film structure Jun. 30, 1987
4675240 Magnetic recording disk using silicon substrate Jun. 23, 1987
4670215 Process for forming a wear-resistant layer on a substrate Jun. 2, 1987
4666797 Wear resistant facings for couplings May. 19, 1987
4666789 Magneto-optic recording medium May. 19, 1987
4666787 Material for sliding surface bearings May. 19, 1987
4650722 Hard faced article Mar. 17, 1987
4647714 Composite sheet material for magnetic and electronic shielding and product obtained therefrom Mar. 3, 1987
4639815 Magnetic recording medium with chromiumiron protective layer Jan. 27, 1987
4632883 Vertical recording medium with improved perpendicular magnetic anisotropy due to influence of beta-tantalum underlayer Dec. 30, 1986
4629659 Corrosion resistant surface-treated steel strip and process for making Dec. 16, 1986
4622271 Magnetic recording medium Nov. 11, 1986
4621030 Perpendicular magnetic recording medium and manufacturing method thereof Nov. 4, 1986
4615920 Pyrophoric stainless steel Oct. 7, 1986
4608320 Surface-treated steel strips adapted for electric resistance welding Aug. 26, 1986
4605599 High density tungsten alloy sheet Aug. 12, 1986
4601941 High heat metal-polymer laminate Jul. 22, 1986
4538562 Engine part Sep. 3, 1985
4535034 High Al heat-resistant alloy steels having Al coating thereon Aug. 13, 1985
4535033 Thermal barrier coating system Aug. 13, 1985
4522890 Multilayer high attenuation shielding structure Jun. 11, 1985
4520076 Magnetic recording medium May. 28, 1985
4515870 Homogeneous, ductile iron based hardfacing foils May. 7, 1985
4514470 Diffusion bonding between titanium base alloys and steels Apr. 30, 1985
4507366 Rolling mill roll for a hot train of rolls Mar. 26, 1985
4503112 Printed circuit material Mar. 5, 1985
4503130 Prestressed ceramic coatings Mar. 5, 1985
4496635 Amorphous metal alloy and composite Jan. 29, 1985
4496434 Process of electroforming a metal product and an electroformed metal product Jan. 29, 1985
4485150 Metal ceramics composites and a method for producing said composites Nov. 27, 1984

1 2 3 4 5 6 7










 
 
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