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Toda Kogyo Corporation patents


Recent patent applications related to Toda Kogyo Corporation. Toda Kogyo Corporation is listed as an Agent/Assignee. Note: Toda Kogyo Corporation may have other listings under different names/spellings. We're not affiliated with Toda Kogyo Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "T" | Toda Kogyo Corporation-related inventors


Positive electrode active substance for non-aqueous electrolyte secondary batteries, and non-aqueous electrolyte secondary battery

In accordance with the present invention, there are provided positive electrode active substance particles for non-aqueous electrolyte secondary batteries which is excellent in life characteristics of a battery with respect to a repeated charging and discharging performance thereof, as well as a non-aqueous electrolyte secondary battery. The present invention relates to a positive electrode active substance for non-aqueous electrolyte secondary batteries comprising lithium transition metal layered oxide having a composition represented by the formula: lia(nixcoymn1-x-y)o2 wherein a is 1.0≦a≦1.15; x is 0<x<1; and y is 0<y<1, in which the positive electrode active substance is in the form of secondary particles formed by aggregating primary particles thereof, and a coefficient of variation of a compositional ratio: li/me wherein me is a sum of ni, co and mn (me=ni+co+mn) as measured on a section of the secondary particle is not more than 25%.. ... Toda Kogyo Corporation

Positive electrode active material particle powder for non-aqueous electrolyte secondary battery, method for manufacturing same, and non-aqueous electrolyte secondary battery

Positive electrode active material particle powder includes: lithium manganese oxide particle powder having li and mn as main components and a cubic spinel structure with an fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (d50) of the secondary particles being from 4 μm to 20 μm, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape having at least one (110) plane that is adjacent to two (111) planes.. ... Toda Kogyo Corporation

Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the same

The object of the present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which is capable of obtaining a bonded magnet molded product having a good magnetic force and a magnetic waveform as well as high ihc and hk by injection molding. The present invention aims at providing a bonded magnet molded product using the ferrite particles and the resin composition. ... Toda Kogyo Corporation

Positive electrode active substance particles for non-aqueous electrolyte secondary batteries and process for producing the same, and non-aqueous electrolyte secondary battery

An object of the present invention is to provide positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in d.c. Resistance characteristics under low-temperature conditions and a process for producing the provide positive electrode active substance particles, and a non-aqueous electrolyte secondary battery. ... Toda Kogyo Corporation

Magnetic antenna, and rf tag and board mounted with the rf tag

The present invention relates to an rf tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an ic mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance l1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance l0 of the magnetic antenna satisfies the specific relational formula. The rf tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.. ... Toda Kogyo Corporation

Magnetic carrier for electrophotographic developer and process for producing the same, and two-component system developer

The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical magnetic composite particles comprising a phenol resin as a binder and ferromagnetic iron oxide particles bonded to each other through the phenol resin, wherein the spherical magnetic composite particles have a ten-point mean roughness rz of 0.3 to 2.0 μm. The magnetic carrier for an electrophotographic developer according to the present invention exhibits an excellent durability against peeling-off and abrasion of coating resins formed thereon and a high stability to mechanical stress exerted onto the carrier, is free from occurrence of spent toner, can be stably held over a long period of time without occurrence of fogging and unevenness in density of toner images, and can keep high-quality images with an excellent gradation for a long period of time.. ... Toda Kogyo Corporation

Ferrite sintered plate and ferrite sintered sheet

The present invention relates to a ferrite sintered plate having a composition comprising 47 to 50 mol % of fe2o3, 7 to 26 mol % of nio, 13 to 36 mol % of zno, 7 to 12 mol % of cuo and 0 to 1.5 mol % of coo, as calculated in terms of the respective oxides, in which the ferrite sintered plate has a volume resistivity of 1×108 to 1×1012·cm and a thickness of 10 to 60 μm; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate, in which the ferrite sintered sheet has a magnetic permeability at 500 khz a real part of which is 120 to 800 and an imaginary part of which is 0 to 30, and a product (μm) of the real part of the magnetic permeability at 500 khz of the ferrite sintered sheet and a thickness of the ferrite sintered plate is 5000 to 48000. The ferrite sintered plate and the ferrite sintered sheet according to the present invention have a high volume resistivity as well as a large μ′ value and a small μ″ value of a magnetic permeability thereof, and therefore can be suitably used as a shielding plate in a digitizer system.. ... Toda Kogyo Corporation

Organic compounds and methods of making organic compounds

The invention relates to a chemical compound of the formula nibm1cm2d(o)x(oh)y, wherein m1 denotes at least one element from the group consisting of fe, co, mg, zn, cu and/or mixtures thereof, m2 denotes at least one element from the group consisting of mn, al, b, ca, cr and/or mixtures thereof, wherein b≦0.8, c≦0.5, d≦0.5, and x is a number between 0.1 and 0.8, y is a number between 1.2 and 1.9, and x+y=2. A process for the preparation thereof, and the use thereof as a precursor for the preparation of cathode material for secondary lithium batteries are described.. ... Toda Kogyo Corporation








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