Inventor
Hwan-koo Lee
Inventor
Suwon-si, KR
Overview
Patents· 25 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography61%
C07DHeterocyclic compounds22%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%
A01KAnimal husbandry2%
A47KSanitary equipment2%
B62BHand-propelled vehicles, e.g. hand carts or perambulators2%
C07CAcyclic or carbocyclic compounds2%
Y10TTechnical subjects covered by former us classification2%
PatentTitleYear
7,494,754'Electrophotographic photoreceptor containing asymmetric naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same'20097,452,641'Electrophotographic organophotoreceptors with novel charge transport compounds'20087,449,270'Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives as electron transport materials in charge generating layer and the electrophotographic imaging apparatus using the photoreceptor'20087,432,029'Electrophotographic photoreceptor containing asymmetrical naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the photoreceptor'20087,413,836'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'20087,396,624'Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same'20087,354,534'Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same'20087,341,811'Electrophotographic photoreceptor using the electron transferring compound'20087,314,692'Phenylazomethylene-cyclohexadienone derivatives comprising electron withdrawing group and electrophotographic photoreceptor comprising the derivatives'20087,291,429'Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material using the derivatives'20077,217,482'Electrophotographic photoreceptor containing a chelate compound'20077,172,843'Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same'20077,169,519'Double-layered positively-charged organic photoreceptor'20077,157,196'Naphthalenetetracarboxylic acid diimide derivatives and electrophotographic photoconductive material having the same'20077,115,346'Multi-layered electrophotographic positively charged organic photoconductor and manufacturing method thereof'20067,112,391'Electrophotographic organophotoreceptors with novel charge transport compounds'20067,083,886'Single layered electrophotographic photoreceptor'20067,083,883'Polymer having stilbenquinone structure and electrophotographic photoreceptor containing the same'20067,078,139'Electrophotographic photoreceptor for wet development'20067,060,405'Naphthoquinone derivative and electrophotographic photoreceptor containing the same'20067,045,264'Single layered electrophotographic photoreceptor'20066,949,321'Double-layered positively-charged organic photoreceptor'20056,949,322'Composition for forming overcoat layer for organophotoreceptor using polyaminoether and organophotoreceptor employing overcoat layer prepared from the composition'20056,887,634'Electrophotographic organophotoreceptors with novel charge transport compounds'20056,670,085'Electrophotographic organophotoreceptors with novel charge transport compounds'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003–2009Patents assigned to SAMSUNG ELECTRONICS CO LTD (25)· patent assignee history
2003Based in Youngdungpo-gu, KR· patent location history
2005–2009Based in Suwon-si, KR· patent location history
2005–2007Based in Gyeonggi-do, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SAMSUNG ELECTRONICS CO LTD | 25 | 2003–2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Suwon-si, KR | 17 | 2005–2009 |
| Gyeonggi-do, KR | 7 | 2005–2007 |
| Youngdungpo-gu, KR | 1 | 2003 |