Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7273667 | Longitudinal multi-layer magnetic recording medium A magnetic recording medium capable of attaining high in-plane recording density of 100 Mbits or more per 1 mm2 is provided. Magnetic recording medium is provided in which underlayers, a first magnetic layer, a first intermediate layer, a second magnetic ... | 09/25/2007 |
| 7267896 | Magnetic tape and magnetic tape cartridge A magnetic recording medium comprising a non-magnetic support; at least one lower magnetic layer containing magnetic powder and a binder resin, which is formed on one side of the non-magnetic support with or without a non-magnetic primer layer interposed between the... | 09/11/2007 |
| 7258900 | Magnetic planarization of pigment flakes A magnetic field is applied to planarize magnetic pigment flakes relative to a surface. Pigment flakes, such as optically variable pigment flakes, are used in a variety of paints, inks, extrusions, powder coatings, and other forms for decorative and security applica... | 08/21/2007 |
| 7242553 | Substrate for magnetic recording medium When a soft magnetic layer for a double layer type perpendicular magnetic recording medium is formed by a plating method, there is the problem of the occurrence of an isolated pulse noise called spike noise so that signal reproduction characteristics are lost. In or... | 07/10/2007 |
| 7229709 | Method for producing nanoparticle layer having uniform easy axis of magnetization, magnetic recording medium having such layer, its production method, and its production apparatus The magnetic recording medium provided is produced by forming a substrate having a nanoparticle layer comprising an array of nanoparticles, and an organic compound between said array of nanoparticles; irradiating the nanoparticle layer with an infrared beam to magne... | 06/12/2007 |
| 7211544 | Flat material especially in the form of a sheet or a strip and device for writing on said material A flat sheet material for manufacturing leaf-like sheets for receiving information has at least one coating applied onto a first side of a substrate. Magnetically activatable particles are embedded in the at least one coating. The magnetically activatable particles ... | 05/01/2007 |
| 6989203 | Magnetic recording medium The present invention provides a magnetic recording medium which can record both digital and analog signals by, e.g., VTR for commercial use and improve their electromagnetic conversion characteristics. A magnetic recording medium comprises a nonmagnetic support, an... | 01/24/2006 |
| 6972158 | Magnetic recording medium The present invention provides a magnetic recording medium which can record both digital and analog signals by, e.g., VTR for commercial use and improve their electromagnetic conversion characteristics. A magnetic recording medium comprises a nonmagnetic support, an... | 12/06/2005 |
| 5547772 | Magnetic recording medium The present invention is directed to a magnetic recording medium comprising a non-magnetic support having provided thereon a plurality of magnetic layers composed of a lower magnetic layer comprising a ferromagnetic powder and a binder, and an upper magne... | 08/20/1996 |
| 5496614 | Magnetic recording medium A magnetic recording medium is disclosed. The recording medium comprises a non-magnetic support and a plurality of magnetic layers being provided on a surface of the support, wherein one of the plural magnetic layers comprises a magnetic material comprising ... | 03/05/1996 |
| 5480713 | Magnetic recording medium A magnetic recording medium having an improved output property over the wide range of wavelength, by controlling the magnetic reluctance and saturated magnetic flux density of the outermost layer and at least one layer other than the outermost layer, as s... | 01/02/1996 |
| 5480732 | Magnetic recording medium A magnetic recording medium comprising a non-magnetic support, a magnetic layer on one surface of said non-magnetic support, a back coating layer on the other surface of said non-magnetic support and a primer layer containing acicular hexagonal ferrite ma... | 01/02/1996 |
| 5264292 | Transfer film having magnetic layers Transfer films consist essentially of a support film, a release layer and a transfer layer detachable from this release layer and composed of two magnetic layers and said transfer films may have, on the second magnetic layer, an adhesive layer which serve... | 11/23/1993 |
| 5258223 | Magnetic recording medium A magnetic recording medium is disclosed, comprising a non-magnetic support having provided thereon at least a lower non-magnetic layer comprising a binder having dispersed therein a non-magnetic powder and an upper magnetic layer comprising a binder havi... | 11/02/1993 |
| 5252392 | Magnetic recording medium comprising multiple magnetic layers with specified composition and properties A magnetic recording medium is disclosed. The medium comprises a support and provided thereon, a plurality of magnetic layers containing a magnetic powder and a binder, wherein an outermost magnetic layer of said magnetic layers comprises a ferromagnetic ... | 10/12/1993 |
| 5156908 | Magnetic recording medium and method for producing the same A magnetic recording medium improved in reproduced output over a wide wavelength region, and methods for producing the same are disclosed, the magnetic recording medium having at least two magnetic layers each containing ferromagnetic powders dispersed in... | 10/20/1992 |
| 5149585 | Magnetic recording medium A magnetic recording medium is disclosed, which is improved in electromagnetic conversion properties. The recording medium comprises a support, an uppermost magnetic mayer being provided on the support and one or more lower magnetic layers being provided ... | 09/22/1992 |
| 5093192 | Magnetic recording medium A magnetic recording medium which has improved electromagnetic conversion characteristics and running ability and is suitable for high-density recording. The magnetic recording medium has at least two magnetic layers which are provided on one side of a su... | 03/03/1992 |
| 5089317 | Magnetic recording medium A magnetic recording medium comprising two or more magnetic layers containing ferromagnetic substance dispersed in a binder provided on a non-magnetic substrate is disclosed, which is characterized in that a ferromagnetic substance whose water content is ... | 02/18/1992 |
| 5084343 | Magnetic recording medium A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon plural magnetic layers containing ferromagnetic particles dispersed in a binder including at least one inner magnetic layer and an outer magnetic layer, wherein sai... | 01/28/1992 |
| 5082729 | Magnetic recording medium for a video tape recorder and a method for preparing the same A magnetic recording medium for a video tape recorder is disclosed, comprising a nonmagnetic support having thereon in the following order an under magnetic layer containing ferromagnetic particles of metal oxide and an upper magnetic layer containing fer... | 01/21/1992 |
| 5077131 | Magnetic recording medium A magnetic recording medium having the excellent properties including the electromagnetic conversion properties is disclosed. The magnetic recording medium comprises a support and provided thereon in sequence the first magnetic layer and the second magnet... | 12/31/1991 |
| 5051303 | Magnetic recording medium A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon plural magnetic layers comprising ferromagnetic particles dispersed in a binder, said ferromagnetic particles consisting of an iron oxide or a cobalt-containing iron... | 09/24/1991 |
| 4851289 | Magnetic recording medium A magnetic recording medium comprising a non-magnetic support having provided thereon plural magnetic layers containing ferromagnetic particles and binders, wherein the ferromagnetic particles contained in the uppermost magnetic layer have an average long... | 07/25/1989 |
| 4847147 | Magnetic recording medium A magnetic recording medium is disclosed which comprises a non-magnetic support having coated thereon two magnetic layers, wherein an under layer of the magnetic layers contains ferromagnetic metal particles having a coercive force of 550 to 700 Oe, and w... | 07/11/1989 |
| 4743490 | Counterfeit-resistant magnetic recording tape Some prior magnetic recording tapes have a backside layer of electrically conductive particles and friction-imparting nonmagnetic particles in a nonmagnetic binder. The novel tape differs in that the nonmagnetic particles are replaced by high-Hc | 05/10/1988 |
| 4741953 | Magnetic recording medium A magnetic recording medium having a broad dynamic range over an entire range of frequency which comprises a substrate material and a magnetic layer comprising magnetic particles and a resinous binder provided on at least one of the surfaces of the substr... | 05/03/1988 |
| 4689263 | Magnetic recording medium A magnetic recording medium comprising a substrate and magnetic recording double-layers formed on the substrate, wherein the magnetic material of the magnetic recording under-layer is composed essentially of an alloy or metal magnetic powder having a spec... | 08/25/1987 |
| 4643942 | Perpendicular magnetic recording medium This invention relates to a two-layer coated recording medium for perpendicular magnetic recording, said medium being composed of (a) a coated non-oriented perpendicular recording layer containing single-domain particles having multiaxial crystalline anisotrop... | 02/17/1987 |
| 4643941 | Magnetic recording medium A magnetic recording medium is disclosed which comprises a non-magnetic support having provided thereon a magnetic layer, the magnetic layer comprising a first magnetic layer provided on the non-magnetic support containing ferromagnetic alloy particles an... | 02/17/1987 |
| 4624894 | Magnetic recording medium In a magnetic recording medium, double magnetic layers are formed on one side of a substrate with a lower magnetic layer containing metallic magnetic particles formed on the substrate and an upper magnetic layer containing plate-shaped ferrite magnetic pa... | 11/25/1986 |
| 4513054 | Magnetic recording medium In a magnetic recording medium comprising a non-magnetic support and two or more magnetic recording layers containing ferromagnetic particles dispersed in a non-magnetic binder, the ferromagnetic particles of the outermost magnetic layer are given a main ... | 04/23/1985 |
| 4511617 | Magnetic recording medium Disclosed is a magnetic recording medium which comprises; a substrate; a first magnetic layer applied on the surface of the substrate and having an easy axis of magnetization in the in-plane direction of the substrate; and a second magnetic layer applied ... | 04/16/1985 |
| 4506000 | Magnetic recording medium A magnetic recording medium having a non-magnetic substrate, a first magnetic layer composed mainly of magnetic powder and binder and formed on the non-magnetic substrate, and a second magnetic layer composed mainly of magnetic powder and binder and forme... | 03/19/1985 |
| 4442159 | Magnetic recording medium A magnetic recording medium which comprises a non-magnetic support having thereon two or more magnetic layers comprising magnetic particles in a binder. The magnetic layer(s) other than the topmost layer comprises needle-shaped magnetic particles. The top... | 04/10/1984 |
| 4439796 | Magnetic recording medium A magnetic recording medium is described having formed on a non-magnetic base at least two magnetic layers, each of the magnetic layers comprising ferromagnetic particles dispersed in a binder, wherein the ferromagnetic particles in the outermost magnetic... | 03/27/1984 |
| 4323621 | Magnetic recording medium A magnetic recording material, preferably for tape recorders which are designed for the iron oxide bias setting and for a playback equalization of 120 μs, consisting of a support and at least two layers containing magnetic pigments and binders and differ... | 04/06/1982 |
| 4259392 | Multilayer magnetic recording medium A magnetic recording tape comprising a non-magnetic support having thereon a dual layer magnetic recording coating comprising ferromagnetic particles dispersed in a binder, wherein the fine ferromagnetic particles of the outer layer are a mixture of two o... | 03/31/1981 |
| 4246316 | Magnetic recording medium This invention relates to a magnetic recording medium comprising a non-magnetic support and magnetic layer provided thereon containing a ferromagnetic metal powder, the magnetic layer having a multilyaer structure consisting of a lower layer containing ac... | 01/20/1981 |
| 4109046 | Flexible multi-layer magnetic recording media Flexible multi-layer magnetic recording media comprising a non-magnetic flexible base and, applied thereto, two superposed magnetizable layers which contain a homogeneous mixture of acicular magnetic chromium dioxide in an organic binder. According to the... | 08/22/1978 |
