Wally Liyuan Chang

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White Plains, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Flame retardant and auto-catalytic polyesters for polyurethanes
- Patent number 9,944,745
- Issue date Apr 17, 2018
- COIM ASIA PACIFIC PTE. LTD.
- Wally Liyuan Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Semiflexible and flexible polyurethanes foams having low fogging ch...
- Patent number 6,774,154
- Issue date Aug 10, 2004
- Crompton Corporation
- Wally Liyuan Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane prepared from sorbitol-branched polyesters
- Patent number 6,420,446
- Issue date Jul 16, 2002
- CK Witco
- Wally Liyuan Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
FLAME RETARDANT AND AUTO-CATALYTIC POLYESTERS FOR POLYURETHANES
- Publication number 20160347909
- Publication date Dec 1, 2016
- COIM ASIA PACIFIC Pte. LTD.
- Wally Liyuan CHANG
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Semiflexible and flexible polyurethanes foams having low fogging ch...
- Publication number 20030191206
- Publication date Oct 9, 2003
- CROMPTON CORPORATION
- Wally Liyuan Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...