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.
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 |
| 7510790 | Magnetic powder, method for producing the same and magnetic recording medium comprising the same A magnetic powder consisting of substantially spherical or ellipsoidal particles comprising a transition metal which comprises iron and a rear earth element which is mainly present in the outer layer of the magnetic powder particles, and having a particle size of 5 ... | 03/31/2009 |
| 7445858 | Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette A magnetic recording medium comprising a non-magnetic support, at least one primer layer formed on one surface of the non-magnetic support, comprising a non-magnetic powder and a binder resin, at least one magnetic layer formed on the primer layer, comprising a magn... | 11/04/2008 |
| 7291409 | Magnetic recording medium using magnetic powder having a core portion and an outer layer portion including a rare earth element and magnetic recording cassette A magnetic recording medium comprising a non-magnetic support, at least one primer layer formed on one surface of the non-magnetic support, comprising a non-magnetic powder and a binder resin, at least one magnetic layer formed on the primer layer, comprising a magn... | 11/06/2007 |
| 7238439 | Magnetic recording medium containing particles with a core containing a FeNphase A magnetic recording medium comprising a nonmagnetic support and a magnetic layer formed on the support and containing a magnetic powder and a binder, wherein said magnetic powder comprises substantially spherical or ellipsoidal particles and at least one element se... | 07/03/2007 |
| 5156916 | Magnetic recording medium comprising a polyurethane binder having a polar group and containing iron carbide A magnetic recording medium having a support and provided thereon, a magnetic layer containing a magnetic powder including iron carbide, and a binder comprising a polar group is disclosed. The binder comprises a resin (A) and a copolymer resin formed by c... | 10/20/1992 |
| 4794042 | Magnetic recording medium A magnetic recording medium wherein a magnetic layer containing a particulate magnetic material and a binder is formed on a substrate exhibits improved performance as magnetic recording tape, disk, and sheet when the particulate magnetic material comprise... | 12/27/1988 |
| 4791021 | Magnetic recording medium A magnetic recording medium is described, having improved carrier noise ratio and weather resistance, by controlling the content and the crystal size of iron nitride which contains iron oxide or &3xb5;-Fex N (2 | 12/13/1988 |
| 4748080 | Magnetic recording medium containing iron carbide A magnetic recording medium containing iron carbide is disclosed. Iron carbide shows electric conductivity and low light transmission. Therefor an antistatic property and light shielding ability of the medium are improved. Iron carbide is contained in the... | 05/31/1988 |
| 4632866 | Magnetic recording medium In a coating type magnetic recording medium, a base film is coated with a magnetic paint composition comprising a binder and a magnetic powder mixture of magnetic metal particles with magnetic metal carbide particles or magnetic metal particles having a m... | 12/30/1986 |
