Cheng-Hsiung Chang

Person

Naperville, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Pressure-sensitive copy systems containing phenolic ester as color-...
- Patent number 4,342,473
- Issue date Aug 3, 1982
- Champion International Corporation
- Cheng H. Chang
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Pressure-sensitive microcapsules containing alkylnaphthalene solven...
- Patent number 4,216,112
- Issue date Aug 5, 1980
- Champion International Corporation
- David N. Vincent
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Micro-capsules containing ureido fluoran chromogenic compounds
- Patent number 4,187,193
- Issue date Feb 5, 1980
- Champion International Corporation
- David N. Vincent
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Formation of microcapsules by interfacial cross-linking, microcapsu...
- Patent number 4,138,362
- Issue date Feb 6, 1979
- Champion International Corporation
- Anthony E. Vassiliades
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Bisfluoran chromogenic compounds, preparation thereof, and pressure...
- Patent number 4,110,343
- Issue date Aug 29, 1978
- Champion International Corporation
- David N. Vincent
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Pressure-sensitive copy system including ureido fluoran chromogenic...
- Patent number 4,104,437
- Issue date Aug 1, 1978
- Champion International Corporation
- David N. Vincent
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Solvent composition for use in carbonless copy systems
- Patent number 4,071,469
- Issue date Jan 31, 1978
- Champion International Corporation
- David N. Vincent
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Bisfluoran chromogenic compounds, preparation thereof, and pressure...
- Patent number 4,012,419
- Issue date Mar 15, 1977
- Champion International Corporation
- David N. Vincent
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Dilactone chromogenic compounds and preparation thereof
- Patent number 3,954,803
- Issue date May 4, 1976
- Champion International Corporation
- David N. Vincent
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Cheng-Hsiung Chang

Person

Patents Grantslast 30 patents

Pressure-sensitive copy systems containing phenolic ester as color-...

Pressure-sensitive microcapsules containing alkylnaphthalene solven...

Micro-capsules containing ureido fluoran chromogenic compounds

Formation of microcapsules by interfacial cross-linking, microcapsu...

Bisfluoran chromogenic compounds, preparation thereof, and pressure...

Pressure-sensitive copy system including ureido fluoran chromogenic...

Solvent composition for use in carbonless copy systems

Bisfluoran chromogenic compounds, preparation thereof, and pressure...

Dilactone chromogenic compounds and preparation thereof