Inventor

Takao Sugiura

Inventor

Chiba, JP

Overview

1993–2020

Patent span

Chemistry

Primary field (CPC C)

Patents· 16 as inventor

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

G03Gprimary

G03GElectrography41%

C01GCompounds containing metals not covered by subclasses c01d or c01f15%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds9%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%

C04BLime, magnesia6%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%

H01FMagnets6%

B01DSeparation3%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds3%

C22CAlloys3%

PatentTitleYear

10,825,593Ni--Zn--Cu ferrite particle, resin composition, and resin molding2020 10,775,711Ferrite carrier core material for electrophotographic developer, ferrite carrier for electrophotographic developer, electrophotographic developer, and method for manufacturing ferrite carrier core material for electrophotographic developer2020 10,603,614Ferrite particles having outer shell structure used for filtering medium2020 10,585,369Ferrite particle having outer shell structure2020 10,564,561Ferrite carrier core material for electrophotographic developer, ferrite carrier for electrophotographic developer, electrophotographic developer, and method for manufacturing ferrite carrier core material for electrophotographic developer2020 10,258,970Ferrite particles provided with outer shell structure for catalyst supporting medium2019 9,588,453'Resin-filled ferrite carrier for electrophotographic developer and electrophotographic developer using the ferrite carrier'2017 9,557,682'Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrier'2017 9,201,328'Core material for resin-filled ferrite carrier and ferrite carrier for electrophotographic developer, and electrophotographic developer using the ferrite carrier'2015 8,475,988'Resin-filled ferrite carrier core material for electrophotographic developer, ferrite carrier and electrophotographic developer using the ferrite carrier'2013 8,431,311'Resin-filled carrier for electrophotographic developer, and electrophotographic developer using the resin-filled carrier'2013 8,187,781'Resin-filled ferrite carrier for electrophotographic developer, production method thereof and electrophotographic developer using the ferrite carrier'2012 8,168,364'Resin-filled carrier for electrophotographic developer, and electrophotographic developer using the resin-filled carrier'2012 8,026,033'Ferrite carrier for electrophotographic developer and electrophotographic developer'2011 6,210,850'Carrier for electrophotographic developer and electrophotographic developer containing the same'2001 5,246,994'Rubber composition containing a nitrile-conjugated diene copolymer'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993Based in Matsuzaka, JP· patent location history

2001–2020Patents assigned to POWDERTECH CO LTD (15)· patent assignee history

2001–2020Based in Chiba, JP· patent location history

2011–2017Based in Kashiwa, JP· patent location history

2012–2017Patents assigned to SUGIURA TAKAO (5)· patent assignee history

2012–2013Patents assigned to KOBAYASHI HIROMICHI (4)· patent assignee history

2012–2013Patents assigned to GONDO TAKESHI (2)· patent assignee history

2013Patents assigned to HIKICHI TAKASHI (1)· patent assignee history

2013Based in Kasiwa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
POWDERTECH CO LTD	15	2001–2020
SUGIURA TAKAOself	5	2012–2017
KOBAYASHI HIROMICHI	4	2012–2013
GONDO TAKESHI	2	2012–2013
HIKICHI TAKASHI	1	2013

Locations

Location	Patents	Span
Chiba, JP	9	2001–2020
Kashiwa, JP	5	2011–2017
Kasiwa, JP	1	2013
Matsuzaka, JP	1	1993