Ifay F. Chang

Follow

Person

Mahopac, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Cathodoluminescent garnet lamp
- Patent number 4,792,728
- Issue date Dec 20, 1988
- International Business Machines Corporation
- Ifay F. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Flat storage CRT and projection display
- Patent number 4,491,762
- Issue date Jan 1, 1985
- International Business Machines Corporation
- Ifay F. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multicolor display device using electroluminescent phosphor screen...
- Patent number 4,155,030
- Issue date May 15, 1979
- International Business Machines Corporation
- Ifay Chang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Multistable cathode ray type storage display device
- Patent number 4,149,108
- Issue date Apr 10, 1979
- International Business Machines Corporation
- Ifay F. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Bistable electroluminescent memory and display device
- Patent number 4,035,774
- Issue date Jul 12, 1977
- International Business Machines Corporation
- Ifay Fay Chang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS