Inventor
Chang J. Yoo
Inventor
Gongju-si, KR
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds18%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients18%
C08LCompositions of macromolecular compounds18%
H01BCables18%
C09KMaterials for miscellaneous applications, not provided for elsewhere9%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h109%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%
PatentTitleYear
8,465,662'Composition for wet etching of silicon dioxide'20134,972,008'Process for preparing a low stress agent & an epoxy composition containing the agent'19904,942,207'Process for the preparation of modified resin useful as a low-stress semiconductor encapsulant and composition formed therefrom'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990Patents assigned to KOREA CHEMICAL CO LTD (2)· patent assignee history
1990Based in Soowon, KR· patent location history
1990Based in Suwon-si, KR· patent location history
2013Patents assigned to KIM DAE HYUN (1)· patent assignee history
2013Patents assigned to LIM JUNG HUN (1)· patent assignee history
2013Patents assigned to PARK SEONG HWAN (1)· patent assignee history
2013Patents assigned to TECHNO SEMICHEM CO LTD (1)· patent assignee history
2013Based in Gongju-si, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOREA CHEMICAL CO LTD | 2 | 1990 |
| KIM DAE HYUN | 1 | 2013 |
| LIM JUNG HUN | 1 | 2013 |
| PARK SEONG HWAN | 1 | 2013 |
| TECHNO SEMICHEM CO LTD | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gongju-si, KR | 1 | 2013 |
| Soowon, KR | 1 | 1990 |
| Suwon-si, KR | 1 | 1990 |