Inventor · Bukit Mertajam, MY

Chee Foo Lum

16Patents

4h-index

23Co-inventors

56Inventor score

Filing activity: Jan 7, 2005 → Oct 30, 2019

Most-cited inventions

Patent	Title	Area	Cited by	Status
US7358481B2	Reflective encoder with three-dimensional code carrier	Physics	108	Expired
US7400269B2	Coding element with integrated limit switch	Electricity	7	Active
US7399956B2	Optical encoder with sinusoidal photodetector output signal	Physics	6	Expired
US7675026B2	Optical jog wheel with spiral coding element	Physics	5	Active
US7619209B2	Encoder with a combined position and index track	Physics	4	Active
US7449677B2	Optical encoder	Physics	4	Active
US7619210B2	Encoder with a combined position and index track	Physics	4	Active
US7378643B2	Optical projection encoder with patterned mask	Physics	4	Expired
US8247758B2	Optical jog wheel with spiral coding element	Physics	4	Active
US7244928B2	Optical encoder	Physics	3	Expired
US8068040B2	Optical encoder with integrated monitor	Physics	3	Active
US7507950B2	Encoder with a combined position and index track	Physics	3	Active
US7732756B2	User navigation device with a code wheel and an encoder	Physics	2	Active
US8605035B2	Backlighting for optical finger navigation	Physics	0	Active
US11742612B2	Adiabatic coaxial cable coupling	Electricity	0	Active
US9619047B2	Optical finger navigation device	Physics	0	Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.