| Patent Number |
Title Of Patent |
Date Issued |
| 5123989 |
Resin-bonding method |
June 23, 1992 |
| Disclosed herein is a method for bonding a resin part, which comprises disposing a magnetic complex composed of a resin and magnetic particles as a heating-medium at the resin parts to be bonded, and applying an alternating magnetic field to the heating-medium by using a magnetic field |
| 5120604 |
Acicular magnetic iron oxide particles and magnetic recording media using such particles |
June 9, 1992 |
| Disclosed herein are acicular magnetic iron oxide particles coated with double coating layers consisting of a Co compound layer as a lower layer and a spinel-type ferrite layer containing Mn-Zn, Ni-Zn or Mn-Ni-Zn as an upper layer, a process for producing the acicular magnetic iron oxide |
| 5118587 |
Magnetic particles used for electrostatic latent image developer and process for producing the s |
June 2, 1992 |
| Disclosed herein are magnetic particles used for an electrostatic latent image developer comprising composite particles containing from more than 80% by weight to not more than 99% by weight of fine ferromagnetic particles and a cured phenol resin, and having a number-average particle |
| 4992191 |
Sphere-like magnetite particles and a process for producing the same |
February 12, 1991 |
| Disclosed herein are sphere-like magnetite particles showing an apparent density of from 0.40 to 1.00 g/cm.sup.3 and a high thermo-stability and containing from 0.1 to 5.0 atomic % of Si to Fe, and a process for producing the sphere-like magnetite particles. |
| 4828916 |
Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording |
May 9, 1989 |
| Disclosed herein are Ba-containing plate like magnetoplumbite type ferrite particles for magnetic recording having the composition of AO.n{(Fe.sub.1-X M.sub.X).sub.2 O.sub.3 } (wherein A represents Ba or Ba and Sr, M represents Zn and Ti, or Zn, Co and Ti, n=6.5-11.0, and x=0.05-0.25 |
| 4806429 |
Plate-like barium ferrite particles suitable for use in magnetic recording and process for produ |
February 21, 1989 |
| Disclosed herein are plate-like barium ferrite particles with a solid solution of zinc on the surface thereof, which have an average particle diameter of 0.05 to 0.3 .mu.m, a coercive force of 300 to 1,500 Oe and a magnetization of not less than 55 emu/g in magnetic field of 10 KOe, and |
| 4752407 |
Process for producing plate-like barium ferrite particles |
June 21, 1988 |
| Disclosed herein are plate-like barium particles which are suitable for use in precursor of sintered magnets and magnetic recording media, which have an average particle diameter of not less than 0.03 .mu.m and less than 0.1 .mu.m, and which are represented by the following formula (I):w |
| 4561988 |
Process for production of plate-like barium ferrite particles for magnetic recording |
December 31, 1985 |
| Disclosed herein is a process for producing the plate-like barium ferrite particles represented by the formula (I):wherein x and y are respectively 0.3 to 1.2 and M is a divalent metal selected from the group consisting of Co, Ni, Zn and Mn, which comprises autoclaving an aqueous highly |
| 4033891 |
Magnetic particle powder of acicular ferric oxide used for magnetic recording material and a pro |
July 5, 1977 |
| The present invention relates to a process for producing magnetic particle powder of acicular ferric oxide used for a magnetic recording material comprising (A) reducing acicular goethite particle powder to obtain acicular magnetite particle powder, (B) heating said acicular magnetite |
| 3970738 |
Process for producing iron oxide products from waste liquids containing ferrous salts |
July 20, 1976 |
| The processes for producing iron oxide products from a solution of ferrous salts selected from the group consisting of waste liquid containing ferrous salts and aqueous solution in which ferrous salts obtained from the waste liquid are dissolved, under the acid, wet and high ferrous |
