Inventor

Koso Aoki

Inventor

Hiroshima, JP

Overview

1990–2016

Patent span

Chemistry

Primary field (CPC C)

Patents· 27 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

Y10Tprimary

Y10TTechnical subjects covered by former us classification19%

G03GElectrography14%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds12%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties10%

C01GCompounds containing metals not covered by subclasses c01d or c01f8%

H01FMagnets8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%

G11BInformation storage based on relative movement between record carrier and transducer5%

B82YSpecific uses or applications of nanostructures4%

PatentTitleYear

9,448,500'Magnetic iron oxide particles, magnetic carrier for electrophotographic developers and process for producing the same, and two-component system developer'2016 9,285,698'Black magnetic iron oxide particles, magnetic carrier for electrophotographic developer and two-component developer'2016 9,085,673'Aniline black having specific sulfur content, and resin composition and water-based and solvent-based dispersions using the aniline black'2015 7,597,958'Black magnetic iron oxide particles having a specific dissolution of sulfur element'2009 7,572,505'Black magnetic iron oxide particles having high breakdown voltage'2009 7,144,626'Magnetic iron oxide particles and magnetic toner using the same'2006 6,844,067'Black iron-based particles and black toner containing the same'2005 6,780,555'Black magnetic iron oxide particles and magnetic toner'2004 6,383,637'Black magnetic iron oxide particles for magnetic toner and process for producing the same'2002 6,103,437'Magnetic toner particles comprising magnetite particles containing silicon'2000 5,922,464'Iron oxide particles'1999 5,874,019'Magnetic particles for magnetic toner and process for producing the same'1999 5,858,532'Magnetite particles, magnetic iron oxide particles, process for the production of the same and magnetic toner using the same'1999 5,843,610'Magnetic particles for magentic toner and process for producing the same'1998 5,693,690'Rubber or resin composition'1997 5,688,852'Iron oxide particles and process for producing the same'1997 5,652,060'Spherical magnetic particles for magnetic toner and process for producing the same'1997 5,648,170'Coated granular magnetite particles and process for producing the same'1997 5,599,627'Magnetic particles comprising magnetite core and process for producing the same'1997 5,578,375'Granular magnetite particles and process for producing the same'1996 5,512,405'Iron oxide particles and process for producing the same'1996 5,470,660'Iron oxide particles and process for producing the same'1995 5,449,565'Magnetic iron oxide particles, a process for producing the same and a magnetic recording medium'1995 5,389,482'Magnetic particle powder included in magnetic toners for magnetic image character recognition'1995 5,368,933'Superparamagnetic fine particles of iron oxide and magnetic recording media containing said particles'1994 5,236,783'Superparamagnetic fine particles of iron oxide and magnetic recording media containing said particles'1993 4,963,448'Photorecording element and liquid crystal cell comprising the same'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Based in Tsukuba, JP· patent location history

1993–2016Patents assigned to TODA KOGYO CORP (26)· patent assignee history

1993–2016Based in Hiroshima, JP· patent location history

1999Based in Horoshima-ken, JP· patent location history

2009–2016Based in Otake, JP· patent location history

2009Based in Ohtake, JP· patent location history

2015–2016Patents assigned to AOKI KOSO (3)· patent assignee history

2016Patents assigned to KURITA EIICHI (2)· patent assignee history

2016Patents assigned to MISAWA HIROMITSU (2)· patent assignee history

2016Patents assigned to UEMOTO SHINJI (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TODA KOGYO CORP	26	1993–2016
AOKI KOSOself	3	2015–2016
KURITA EIICHI	2	2016
MISAWA HIROMITSU	2	2016
UEMOTO SHINJI	2	2016

Locations

Location	Patents	Span
Hiroshima, JP	21	1993–2016
Otake, JP	3	2009–2016
Ohtake, JP	1	2009
Horoshima-ken, JP	1	1999
Tsukuba, JP	1	1990