Andy C. Chang
30Patents
15h-index
60Co-inventors
80Inventor score
Filing activity: Feb 28, 2005 → Aug 16, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7355089B2 | Compositions of ethylene/α-olefin multi-block interpolymer for elastic films and laminates | Emerging Cross-Sectional Technologies | 167 | Active |
| US7504347B2 | Fibers made from copolymers of propylene/α-olefins | Emerging Cross-Sectional Technologies | 82 | Active |
| US7910658B2 | Compositions of ethylene/α-olefin multi-block interpolymer for elastic films and laminates | Emerging Cross-Sectional Technologies | 55 | Active |
| US7737215B2 | Compositions of ethylene/α-olefin multi-block interpolymer for elastic films and laminates | Emerging Cross-Sectional Technologies | 53 | Active |
| US7947367B2 | Fibers made from copolymers of ethylene/α-olefins | Emerging Cross-Sectional Technologies | 50 | Active |
| US7737061B2 | Compositions of ethylene/alpha-olefin multi-block interpolymer for elastic films and laminates | Emerging Cross-Sectional Technologies | 50 | Expired |
| US7732052B2 | Compositions of ethylene/alpha-olefin multi-block interpolymer for elastic films and laminates | Emerging Cross-Sectional Technologies | 49 | Active |
| US7803728B2 | Fibers made from copolymers of ethylene/α-olefins | Emerging Cross-Sectional Technologies | 48 | Active |
| US8273068B2 | Compositions of ethylene/alpha-olefin multi-block interpolymer for elastic films and laminates | Emerging Cross-Sectional Technologies | 41 | Active |
| US8067319B2 | Fibers made from copolymers of ethylene/α-olefins | Emerging Cross-Sectional Technologies | 37 | Active |
| US7498282B2 | Multi-layer, elastic articles | Emerging Cross-Sectional Technologies | 27 | Active |
| US7101623B2 | Extensible and elastic conjugate fibers and webs having a nontacky feel | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7101622B2 | Propylene-based copolymers, a method of making the fibers and articles made from the fibers | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7807593B2 | Multi-layer, pre-stretched elastic articles | Emerging Cross-Sectional Technologies | 17 | Active |
| US8721827B2 | Elastic films and laminates | Emerging Cross-Sectional Technologies | 16 | Active |
| US7413803B2 | Extensible and elastic conjugate fibers and webs having a nontacky feel | Emerging Cross-Sectional Technologies | 13 | Active |
| US9677370B2 | Deformable plug and seal well system | Fixed Constructions | 6 | Active |
| US9677371B2 | Fluid loss well treatment | Fixed Constructions | 5 | Active |
| US7893161B2 | Propylene-based elastomeric composition | Chemistry; Metallurgy | 4 | Active |
| US10107064B2 | Changeable well seal tool | Fixed Constructions | 4 | Active |
| US9677372B2 | Well system cementing plug | Fixed Constructions | 3 | Active |
| US8022144B2 | Propylene-based elastomeric composition | Chemistry; Metallurgy | 3 | Active |
| US9958572B2 | Synthetic test beds for fracturing optimization and methods of manufacture and use thereof | Physics | 2 | Active |
| US7847029B2 | Elastomeric resin compositions with improved resistance to draw resonance | Chemistry; Metallurgy | 2 | Active |
| US10711331B2 | Polycrystalline diamond compact with gradient interfacial layer | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.