Inventor

HEFFNER WILLIAM R

US5 patents

⚠️ This page may combine multiple inventors who share the name “HEFFNER WILLIAM R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AT & T BELL LAB

2 patents

US4529271AJul 16, 1985

Matrix addressed bistable liquid crystal display

AT & T BELL LAB42 citations90

US4505548AMar 19, 1985

Bistable liquid crystal twist cell

AT & T BELL LAB22 citations79

BELL TELEPHONE LABOR INC

1 patent

US4239345ADec 16, 1980

Bistable liquid crystal twist cell

BELL TELEPHONE LABOR INC53 citations93

LUCENT TECHNOLOGIES INC

1 patent

US6255707B1Jul 3, 2001

Semiconductor laser reliability test structure and method

LUCENT TECHNOLOGIES INC17 citations82

TRIQUINT TECHNOLOGY HOLDING CO

1 patent

US6555457B1Apr 29, 2003

Method of forming a laser circuit having low penetration ohmic contact providing impurity gettering and the resultant laser circuit

TRIQUINT TECHNOLOGY HOLDING CO14 citations80