Inventor

Saburo Yokota

Inventor

Suwon-si, KR

Overview

2002–2009

Patent span

Physics

Primary field (CPC G)

Patents· 24 as inventor

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

G03Gprimary

G03GElectrography67%

C07DHeterocyclic compounds14%

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

A01KAnimal husbandry3%

A47KSanitary equipment3%

B62BHand-propelled vehicles, e.g. hand carts or perambulators3%

C07CAcyclic or carbocyclic compounds3%

Y10TTechnical subjects covered by former us classification3%

PatentTitleYear

7,622,232'Electrophotographic photoreceptor and electrophotographic imaging apparatus employing the photoreceptor'2009 7,494,754'Electrophotographic photoreceptor containing asymmetric naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same'2009 7,449,270'Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives as electron transport materials in charge generating layer and the electrophotographic imaging apparatus using the photoreceptor'2008 7,432,029'Electrophotographic photoreceptor containing asymmetrical naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the photoreceptor'2008 7,413,836'Electrophotographic photoreceptor containing asymmetrical naphthalenetetracarboxylic acid diimide derivative as electron transporting material in a charge generating layer and electrophotographic image forming apparatus employing the photoreceptor'2008 7,396,624'Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same'2008 7,354,534'Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same'2008 7,341,811'Electrophotographic photoreceptor using the electron transferring compound'2008 7,314,692'Phenylazomethylene-cyclohexadienone derivatives comprising electron withdrawing group and electrophotographic photoreceptor comprising the derivatives'2008 7,291,429'Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material using the derivatives'2007 7,217,482'Electrophotographic photoreceptor containing a chelate compound'2007 7,172,843'Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same'2007 7,169,519'Double-layered positively-charged organic photoreceptor'2007 7,157,196'Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material having the same'2007 7,115,346'Multi-layered electrophotographic positively charged organic photoconductor and manufacturing method thereof'2006 7,083,883'Polymer having stilbenquinone structure and electrophotographic photoreceptor containing the same'2006 7,083,886'Single layered electrophotographic photoreceptor'2006 7,078,139'Electrophotographic photoreceptor for wet development'2006 7,060,405'Naphthoquinone derivative and electrophotographic photoreceptor containing the same'2006 7,045,264'Single layered electrophotographic photoreceptor'2006 6,949,321'Double-layered positively-charged organic photoreceptor'2005 6,949,322'Composition for forming overcoat layer for organophotoreceptor using polyaminoether and organophotoreceptor employing overcoat layer prepared from the composition'2005 6,884,559'Electrophotographic imaging method'2005 6,348,290'Multilayer organic photoconductor including electrically conductive support having specific index of surface area'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Patents assigned to NIPPON INK AND CHEMICALS INC (1)· patent assignee history

2002Based in Saitama, JP· patent location history

2005–2009Patents assigned to SAMSUNG ELECTRONICS CO LTD (23)· patent assignee history

2005–2007Based in Gyeonggi-do, KR· patent location history

2006–2009Based in Suwon-si, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SAMSUNG ELECTRONICS CO LTD	23	2005–2009
NIPPON INK AND CHEMICALS INC	1	2002

Locations

Location	Patents	Span
Suwon-si, KR	15	2006–2009
Gyeonggi-do, KR	8	2005–2007
Saitama, JP	1	2002