Kil Yeong Choi

Person

Daejong, KR

People

Patents Grantslast 30 patents

Information Patent Grant
Quantitative evaluation of scratch-induced damages on polymeric and...
- Patent number 8,316,689
- Issue date Nov 27, 2012
- Korea Research Institute of Chemical Technology
- Jong Il Weon
- G01 - MEASURING TESTING
Information Patent Grant
Reactive photo acid-generating agent and heat-resistant photoresist...
- Patent number 6,582,879
- Issue date Jun 24, 2003
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process of preparing polycarbonates using microwave
- Patent number 6,525,109
- Issue date Feb 25, 2003
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyamide-imide having head-to-tail backbone
- Patent number 6,433,184
- Issue date Aug 13, 2002
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process of preparing polycarbonates
- Patent number 6,423,812
- Issue date Jul 23, 2002
- Korea Research Institute of Chemical Technology
- Young Chan Ko
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of polycarbonates
- Patent number 6,232,432
- Issue date May 15, 2001
- Korea Research Institute of Chemical Technology and S-Oil Corporation
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation of polyimide foam
- Patent number 6,172,127
- Issue date Jan 9, 2001
- Korea Research Institute of Chemical Technology
- Kil Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Soluble polyimide resin having a dialkyl substituent for a liquid c...
- Patent number 6,162,893
- Issue date Dec 19, 2000
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of preparing polyimide foam with excellent flexibility prope...
- Patent number 6,057,379
- Issue date May 2, 2000
- Korea Research Institute of Chemical Technology
- Kil Y. Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Soluble polyimide resin comprising polyalicyclic structure
- Patent number 6,054,554
- Issue date Apr 25, 2000
- Korea Research Institute of Chemical Technology
- Kil Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Soluble polyimide resin having alkoxy substituents and the preparat...
- Patent number 6,046,303
- Issue date Apr 4, 2000
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Soluble polyimide resin and process of preparation of the same
- Patent number 6,031,067
- Issue date Feb 29, 2000
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyarylether containing N-substituted imide groups and process for...
- Patent number 6,018,055
- Issue date Jan 25, 2000
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Soluble polyimide resin for liquid crystal alignment layer and proc...
- Patent number 6,013,760
- Issue date Jan 11, 2000
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing polyamideimide resins by direct polymerization
- Patent number 5,955,568
- Issue date Sep 21, 1999
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Cyclohexane-1,2,4,5-diimide derivative and process for preparing th...
- Patent number 5,919,942
- Issue date Jul 6, 1999
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polyamideamic acid resin prepolymers, high heat resistant polyamide...
- Patent number 5,824,766
- Issue date Oct 20, 1998
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Amorphus polyamides having second order nonlinear optical property,...
- Patent number 5,693,744
- Issue date Dec 2, 1997
- Korea Research Institute of Chemical Technology
- Kil Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Melt processable etherimideimide/etherimide copolymer
- Patent number 5,569,738
- Issue date Oct 29, 1996
- Korea Research Institute of Chemical Technology
- Kil Y. Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing polyamideimide resins having high molecular w...
- Patent number 5,532,334
- Issue date Jul 2, 1996
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyamideimide resins containing isophorone diamine structures
- Patent number 5,521,276
- Issue date May 28, 1996
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for manufacturing phosphoric acid-type chelate resin as ura...
- Patent number 5,489,616
- Issue date Feb 6, 1996
- Korea Research Institute of Chemical Technology
- In Hwan Park
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Phosphonic acid chelating resins for uranyl ion adsorption
- Patent number 5,457,163
- Issue date Oct 10, 1995
- Korea Research Institute of Chemical Technology
- In Hwan Park
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Aromatic polyamide containing pendant silyl groups
- Patent number 5,243,010
- Issue date Sep 7, 1993
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Nadimide-terminated polyarylates and cured polyarylate resins
- Patent number 5,241,037
- Issue date Aug 31, 1993
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyetherimideimides and a method for manufacturing them
- Patent number 5,212,277
- Issue date May 18, 1993
- Korea Research Institute of Chemical Technology
- Kwang-Sup Lee
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
QUANTITATIVE EVALUATION OF SCRATCH-INDUCED DAMAGES ON POLYMERIC AND...
- Publication number 20110239748
- Publication date Oct 6, 2011
- Korea Research Institute of Chemical Technology
- Jong Il WEON
- G01 - MEASURING TESTING
Information Patent Application
Reactive photo acid-generating agent and heat-resistant photoresist...
- Publication number 20030064315
- Publication date Apr 3, 2003
- Korea Research Institute of Chemical Technology
- Kil-Yeong Choi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process fo preparing polycarbonates
- Publication number 20020022711
- Publication date Feb 21, 2002
- Korea Research Institute of Chemical Technology
- Young Chan Ko
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process of preparing polycarbonates using microwave
- Publication number 20020022675
- Publication date Feb 21, 2002
- Korea Research Institute of Chemical Technology and S-Oil Corporation
- Kil-Yeong Choi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Kil Yeong Choi

Person

Patents Grantslast 30 patents

Quantitative evaluation of scratch-induced damages on polymeric and...

Reactive photo acid-generating agent and heat-resistant photoresist...

Process of preparing polycarbonates using microwave

Polyamide-imide having head-to-tail backbone

Process of preparing polycarbonates

Process for the preparation of polycarbonates

Preparation of polyimide foam

Soluble polyimide resin having a dialkyl substituent for a liquid c...

Method of preparing polyimide foam with excellent flexibility prope...

Soluble polyimide resin comprising polyalicyclic structure

Soluble polyimide resin having alkoxy substituents and the preparat...

Soluble polyimide resin and process of preparation of the same

Polyarylether containing N-substituted imide groups and process for...

Soluble polyimide resin for liquid crystal alignment layer and proc...

Process for preparing polyamideimide resins by direct polymerization

Cyclohexane-1,2,4,5-diimide derivative and process for preparing th...

Polyamideamic acid resin prepolymers, high heat resistant polyamide...

Amorphus polyamides having second order nonlinear optical property,...

Melt processable etherimideimide/etherimide copolymer

Process for preparing polyamideimide resins having high molecular w...

Polyamideimide resins containing isophorone diamine structures

Process for manufacturing phosphoric acid-type chelate resin as ura...

Phosphonic acid chelating resins for uranyl ion adsorption

Aromatic polyamide containing pendant silyl groups

Nadimide-terminated polyarylates and cured polyarylate resins

Polyetherimideimides and a method for manufacturing them

Patents Applicationslast 30 patents

QUANTITATIVE EVALUATION OF SCRATCH-INDUCED DAMAGES ON POLYMERIC AND...

Reactive photo acid-generating agent and heat-resistant photoresist...

Process fo preparing polycarbonates

Process of preparing polycarbonates using microwave