Inventor
CHANG IFAY F
US13 patents
⚠️ This page may combine multiple inventors who share the name “CHANG IFAY F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
9 patentsUS5764223AJun 9, 1998
Touch-screen input device using the monitor as a light source operating at an intermediate frequency
IBM158 citations97
US4767192AAug 30, 1988
Light activated light valve with a silicon control element
IBM74 citations96
US4792728ADec 20, 1988
Cathodoluminescent garnet lamp
IBM58 citations94
US4642459AFeb 10, 1987
Light pen input system having two-threshold light sensing
IBM88 citations94
US4500955AFeb 19, 1985
Full word coding for information processing
IBM21 citations81
US4440831AApr 3, 1984
Zinc silicate phosphor particles and method for making them
IBM10 citations72
US4231892ANov 4, 1980
Manganese doped zinc silicate luminescent phosphors with III-V oxide substitutions
IBM15 citations70
US4149108AApr 10, 1979
Multistable cathode ray type storage display device
IBM2 citations62
US4491762AJan 1, 1985
Flat storage CRT and projection display
IBM0 citations41
CHANG IFAY F
4 patentsUS7065070B1Jun 20, 2006
Method and system for establishing a voice communication service for business transactions and commerce applications
CHANG IFAY F51 citations94
US8138886B1Mar 20, 2012
Communication enabled active lock system
CHANG IFAY F40 citations93
US7325029B1Jan 29, 2008
Methods for enabling e-commerce voice communication
CHANG IFAY F20 citations91
US7643435B1Jan 5, 2010
Method and system for establishing a voice communication solution for business transactions and commerce applications
CHANG IFAY F8 citations82