Quotables
"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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 |
| 6863966 | Black magnetic acicular composite particles for magnetic recording medium and magnetic recording medium using the same A magnetic recording medium comprises: a non-magnetic base film; and a magnetic recording layer comprising a binder resin and black magnetic acicular composite particles having an average particle diameter of 0.051... | 03/08/2005 |
| 6803104 | Magnetic recording medium, non-magnetic acicular black iron-based composite particles and process for producing the particles A magnetic recording medium composed of a non-magnetic base film; a non-magnetic undercoat layer formed on the non-magnetic base film, including a binder resin and non-magnetic acicular black iron-based composite particles; and a magnetic coating film comprising a b... | 10/12/2004 |
| 6767611 | Black magnetic acicular containing composite particles magnetic recording medium A magnetic recording medium using black magnetic acicular composite particles produced by forming a single carbon black coat between the surface of magnetic acicular cobalt-coated iron oxide particle or magnetic acicular metal particle and a coating comprising at le... | 07/27/2004 |
| 6638675 | Black magnetic toner Black magnetic toner comprising: a binder resin, and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 μm; a coating layer formed on the surface of said magnetic iron o... | 10/28/2003 |
| 6562532 | Black magnetic toner and black magnetic composite particles therefor Black magnetic toner comprising: a binder resin; and black magnetic composite particles having an average particle diameter of 0.06 to 1.0 μm comprising: magnetic iron oxide particles, a coating layer formed on the surface of the magnetic iron oxide particles, ... | 05/13/2003 |
| 6531211 | Black plate-shaped ferrite composite particles with magnet oplumbite structure and magnetic recording medium using the same Black plate-shaped ferrite composite particles with magnetoplumbite structure, particle size of 0.01 to 0.2 μm are surface coated with an organosilicon compound(s) and a carbon black coating is applied over the organosilicon coating layer. Optionally, a ... | 03/11/2003 |
| 6420030 | Black iron-based composite particles, process for producing the same, paint and rubber or resin composition containing the same Black iron-based composite particles of the present invention comprise: as a core particle black iron oxide particle or black iron oxide hydroxide particle having an average particle size of 0.08 to 1.0 μm; a coating layer formed on the surface of the black iron o... | 07/16/2002 |
| 6416864 | Black magnetic composite particles for a black magnetic toner Black magnetic toner comprising: a binder resin, and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 μm; a coating layer formed on the surface of said magnetic iron oxide partic... | 07/09/2002 |
| 6379855 | Black magnetic toner and black magnetic composite particles therefor Black magnetic toner comprising: a binder resin; and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 μm, a coating layer formed on the surface of the magnetic iron oxide particles, ... | 04/30/2002 |
| 6352776 | Magnetic recording medium, non-magnetic acicular black iron-based composite particles and process for producing the particles A magnetic recording medium of the present invention comprises: a non-magnetic base film; a non-magnetic undercoat layer formed on the non-magnetic base film, comprising a binder resin and non-magnetic acicular black iron-based composite particles; and a magne... | 03/05/2002 |
| 6294242 | Magnetic recording medium A magnetic recording medium of the present invention comprises: a non-magnetic base film; and a magnetic recording layer comprising a binder resin and black magnetic acicular composite particles having an average particle diameter of 0.051 to 0.72 μm, co... | 09/25/2001 |
| 6287668 | Magnetic recording medium and substrate therefor A magnetic recording medium of the present invention comprises: a non-magnetic base film; a non-magnetic undercoat layer formed on said non-magnetic base film, comprising a binder resin and non-magnetic acicular black iron-based composite particles; and a magn... | 09/11/2001 |
| 6251555 | Black magnetic composite particles for black magnetic toner and black magnetic toner using the same Black magnetic composite particles for black magnetic toner according to the present invention comprise: magnetite particle as core particle; fine particles which are adhered or exist on at least a part of the surface of each magnetite particle, and comprise o... | 06/26/2001 |
| 6207253 | Acicular hematite particles and magnetic recording medium Acicular hematite particles of the present invention comprise an average major axis diameter of 0.004 to 0.295 μm, a geometrical standard deviation of minor axis diameter of not more than 1.35 and a pH value of not less than 8, and containing not more th... | 03/27/2001 |
| 6130017 | Black non-magnetic composite particles for black toner and black toner using the same Black non-magnetic composite particles for black toner according to the present invention, comprise: black hematite particles or black iron oxide hydroxide particles as core particles; fine particles which are adhered or exist on at least a part of the surface... | 10/10/2000 |
| 6124022 | Acicular hematite particles for non-magnetic undercoat layer of magnetic recording medium, and magnetic recording medium using the same Acicular hematite particles of the present invention comprise a geometrical standard deviation of major axis diameter of not more than 1.50, a geometrical standard deviation of minor axis diameter of not more than 1.35, a BET specific surface area of 35.9... | 09/26/2000 |
