Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7332194 | Perpendicular magnetic recording medium and method of manufacturing thereof A perpendicular magnetic recording medium is disclosed that is characterized by a lowered noise component and improved thermal stability. The method for making the recording medium includes the serial steps of forming a soft magnetic back-lining layer on a non-magne... | 02/19/2008 |
| 7323260 | Lubricant, recording medium and carboxylic acid compound The present invention provides a lubricant capable of holding an excellent lubricating property under various types of service conditions, maintaining a lubricating effect for a long period of time and providing excellent traveling property, abrasion resistance, dur... | 01/29/2008 |
| 7244522 | Lubricant for magnetic recording medium and use thereof A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a co... | 07/17/2007 |
| 7241517 | Magnetic recording medium and magnetic storage apparatus A magnetic recording medium is constructed to include a lower magnetic layer, a nonmagnetic spacer layer disposed on the lower magnetic layer, and an upper magnetic layer disposed on the nonmagnetic spacer layer, where the upper and lower magnetic layers are antifer... | 07/10/2007 |
| 7195828 | Lubricant for magnetic recording medium and use thereof A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a co... | 03/27/2007 |
| 7081277 | Magnetic disk drive having a surface coating on a magnetic disk A magnetic disk is produced with improved yield by forming a DLC protective film by a d.c. magnetron sputtering process conducted in a sputtering atmosphere containing oxygen. The magnetic disk carries a lubricating film on the DLC film wherein a fluorocarbon resin ... | 07/25/2006 |
| 6989356 | Partially-fluorinated-alkyl compound, lubricant comprising the compound, and recording medium using the lubricant To provide a lubricant for recording medium, which is advantageous not only in that it maintains excellent lubricity under various conditions for use and excellent lubricating effect over a long time, but also in that it can impart excellent transport properties and... | 01/24/2006 |
| 5534322 | Recording medium A recording medium, showing sufficient resistance to contamination and having excellent reproducing characteristics, comprises a film provided on a surface thereof and this film comprises a copolymer formed by polymerizing a composition which comprises a ... | 07/09/1996 |
| 5527617 | Metal thin film magnetic recording medium having a silicone compound protective layer A metal thin layer type magnetic recording medium is disclosed, comprising a non-magnetic support having formed thereon (1) a ferromagnetic metal thin layer or (2) a ferromagnetic metal thin layer and a protective layer formed on the ferromagnetic metal t... | 06/18/1996 |
| 5162163 | Magnetic recording medium having a lubricant film consisting of a mixture of two lubricants and which has two peaks of molecular weight This invention relates to a magnetic recording medium wherein the improvement comprises a lubricative film comprising a lubricant having a functional group at one end of the molecule and a lubricant having a functional group at both ends of the molecule. ... | 11/10/1992 |
| 5051295 | Protective film for photo masks and lith films The present invention relates to a durable pattern forming material having a protective film comprising a radiation cured product of a curable compound, comprising a phosphazene of the formula: --{NP(x) (Y)}n -- wherein at least one of x and y is a ... | 09/24/1991 |
| 4828899 | Magnetic recording medium and recording/reproducing method thereof A magnetic recording medium comprising a ferromagnetic metal thin film layer primarily based on cobalt and formed on the surface of a flexible substrate, and an organic topcoat layer containing a radiation curable compound having a molecular weight of les... | 05/09/1989 |
| 4778707 | Magnetic recording medium and recording/reproducing method therefor A magnetic recording medium comprising a ferromagnetic metal thin film layer primarily based on cobalt and formed on the surface of a flexible substrate, an organic topcoat layer containing an anti-oxidant and a lubricant on the surface of the metal thin ... | 10/18/1988 |
| 4761316 | Recording medium and method of producing the same A recording medium which comprises a base body, a recording layer formed on the base body, and a protection layer formed on the recording layer for protecting the recording layer. The protection layer is made from silane surface active agent and the agent... | 08/02/1988 |
| 4759991 | Magnetic recording medium having a lubricating coating layer A magnetic recording medium having a modified surface, consisting essentially of (a) a substrate, (b) a ferromagnetic metal thin film formed on one side of the substrate by a vacuum deposition method, an ion plating method, a sputtering method or a platin... | 07/26/1988 |
| 4746559 | Magnetic recording medium Disclosed is a magnetic recording medium comprising a non-magnetic support having provided thereon a ferromagnetic metal thin film provided with a layer containing a compound having a mercapto group. This layer may also contain an ester bond. The magnetic... | 05/24/1988 |
| 4725496 | Magnetic recording medium A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a ferromagnetic thin metal film, wherein a layer consisting essentially of a boric acid ester compound is provided on the ferromagnetic thin metal film.... | 02/16/1988 |
| 4707392 | Flexible magnetic disk A flexible magnetic disk in which the friction between the magnetic sheet of the disk and a positioning member is reduced, the magnetic sheet is positioned properly and without offset each time it is loaded in a reading/reproducing device, and the trackin... | 11/17/1987 |
| 4701375 | Magnetic recording medium A magnetic recording medium, comprising a non-magnetic substrate, a magnetic recording layer of ferromagnetic film formed on one side of said substrate, and a topcoat layer comprising an antioxidant and a lubricant and formed on the surface of said magnet... | 10/20/1987 |
| 4690857 | Magnetic recording medium A magnetic recording medium comprising a non-magnetic support having provided thereon, in sequence a thin ferromagnetic metal film, and at least one monomolecular layer comprising a saturated fatty acid salt of at least one metal selected from the group c... | 09/01/1987 |
| 4668587 | Magnetic recording medium A magnetic recording medium comprising a substrate, a magnetic layer containing ferromagnetic metal as a magnetic material on at least one of the surfaces of the substrate and a top coating on the magnetic layer which contains a salt of a nitrogen-contain... | 05/26/1987 |
| 4652483 | Magnetic recording medium A magnetic recording medium comprises a non-magnetic substrate, a thin ferromagnetic film layer overlaid on the substrate, and a polymer film formed by plasma polymerization. The thin ferromagnetic film layer is composed of ferromagnetic columnar grains. ... | 03/24/1987 |
| 4621008 | Magnetic recording medium A magnetic recording medium for use in video and other applications is presented which comprises a substrate, a continuous thin magnetic layer of cobalt and at least one selected from nickel, chromium, and oxygen, preferably obliquely evaporated on the su... | 11/04/1986 |
| 4610930 | Magnetic recording medium and process for producing the same A magnetic recording medium having a thin magnetic recording metal film formed on one surface of a non-magnetic base is disclosed. A thin cured epoxy resin film comprising an epoxy resin having an epoxy equivalent of from 400 to 3,000 and a curing agent m... | 09/09/1986 |
| 4592948 | Magnetic recording medium A magnetic recording medium for use in video and other applications is presented which comprises a substrate, a continuous thin magnetic layer of cobalt and at least one selected from nickel, chromium, and oxygen, preferably obliquely evaporated on the su... | 06/03/1986 |
| 4588656 | Method of preparing a magnetic recording medium A magnetic recording medium comprising a substrate, a thin magnetic metal film having spaced-apart columnar grains deposited on the substrate, and an organic polymer formed in the space between the columnar grains and integrated therewith. The medium is p... | 05/13/1986 |
| 4581245 | Method of manufacturing of abrasion resisting magnetic recording product A method and apparatus for making an abrasion-resistant magnetic recording product comprising forming a magnetic film on the surface of a substrate in a vacuum container, and thereafter, vapor depositing a lubricant on the surface of the magnetic film in ... | 04/08/1986 |
| 4537832 | Magnetic recording medium A magnetic recording medium for use in video and other applications is presented which comprises a substrate, a continuous thin magnetic layer of cobalt and at least one selected from nickel, chromium, and oxygen, preferably obliquely evaporated on the su... | 08/27/1985 |
| 4529651 | Magnetic recording medium having organic protective overlayer A magnetic recording medium produced by forming an organic protective layer on a magnetic recording layer by sputtering conducted in an inert gas atmosphere using a material for forming the organic protective layer as cathode and the magnetic recording la... | 07/16/1985 |
| 4520070 | Magnetic recording medium and process for producing same A magnetic recording medium having a thin magnetic film on a non-magnetic support base is disclosed. A layer of a compound which contains at least two isocyanate groups is formed in connection with the medium, and may be formed on either the surface of th... | 05/28/1985 |
| 4497864 | Magnetic recording medium A magnetic recording medium is disclosed. The medium is comprised of a support base having coated thereon a magnetic layer comprised of ferromagnetic particles dispersed in a binder and further comprised of at least one anhydrosorbitol di- and/or tetra-fa... | 02/05/1985 |
| 4486500 | Magnetic recording medium A magnetic recording medium having a thin magnetic metal film on a non-magnetic base is disclosed. A surface layer is formed on either the thin magnetic metal film or the other side of the base or both by irradiating a coating of a polymer having an unsat... | 12/04/1984 |
| 4476195 | Magnetic recording medium and process for the production thereof A magnetic recording medium having, on a non-magnetic support, a magnetic recording layer of a mixture of a ferromagnetic material and an organic lubricant, which magnetic recording layer is prepared by the simultaneous vacuum evaporation process to resul... | 10/09/1984 |
| 4448843 | Magnetic recording medium A magnetic recording medium is described wherein a layer comprising mainly a polyurethane resin, vinylidene chloride copolymer, or a cellulose derivative is formed on the surface of a vapor-deposited ferromagnetic metal layer on a substrate.... | 05/15/1984 |
| 4443514 | Magnetic recording medium A magnetic recording medium having a thin magnetic metal film formed on a non-magnetic base is disclosed. A thin film of a copolymer having vinylidene chloride and acrylonitrile as repeating units is formed on either the thin magnetic metal film or the su... | 04/17/1984 |
| 4425404 | Magnetic recording medium In a magnetic recording medium having an oxygen-containing thin ferromagnetic metal layer formed on a nonmagnetic substrate, at least one compound capable of suppressing the hydration of the ferromagnetic metal ions by acting thereon is located on or in t... | 01/10/1984 |
| 4401725 | Magnetic recording medium A magnetic recording medium consisting of a non-magnetic substrate and a thin film metal magnetic layer is disclosed. The magnetic recording medium carries polyphenyl ether compound having the following formula ##STR1## where n is an integer satisfyi... | 08/30/1983 |
| 4396674 | Magnetic recording medium with amino lubricating layer The magnetic recording media are constructed such that a lubricating layer containing an amine compound represented by the formula: ##STR1## (wherein R is a hydrocarbon residue having from 7 to 21 carbon atoms and n is an integer ranging from 1 to 10... | 08/02/1983 |
| 4391874 | Magnetic recording medium A magnetic recording medium having a thin magnetic film on a non-magnetic support base is disclosed. A layer of isocyanic acid ester is formed in connection with the medium, and may be formed on either the surface of the metal film or the surface of the b... | 07/05/1983 |
| 4390601 | Magnetic recording medium and process for the production thereof A magnetic recording medium comprising a non-magnetic support having thereon a vapor-deposited solid film of a ferromagnetic material formed by vacuum evaporation, on the surface of said magnetic recording medium being further provided a vapor deposited f... | 06/28/1983 |
