Inventor
PRUETT HENRY FRAZIER
US17 patents
⚠️ This page may combine multiple inventors who share the name “PRUETT HENRY FRAZIER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
INFOCUS CORP
10 patentsUS6520648B2Feb 18, 2003
Lamp power pulse modulation in color sequential projection displays
INFOCUS CORP121 citations95
US6639365B2Oct 28, 2003
Ultra-compact arc discharge lamp system with an additional electrode
INFOCUS CORP20 citations92
US6624585B2Sep 23, 2003
Ultra-compact igniter circuit for arc discharge lamp
INFOCUS CORP25 citations92
US6472828B1Oct 29, 2002
Control for projector lamp heat dissipation
INFOCUS CORP81 citations92
US7633245B2Dec 15, 2009
Light-emitting device driver circuit
INFOCUS CORP15 citations83
US6424097B1Jul 23, 2002
Projection lamp safety interlock apparatus and method
INFOCUS CORP14 citations83
US7091670B2Aug 15, 2006
Safety interlock apparatus and method
INFOCUS CORP5 citations73
US6853152B2Feb 8, 2005
Electric power supply safety interlock system
INFOCUS CORP11 citations73
US7372883B2May 13, 2008
Light emitting device driver circuit
INFOCUS CORP2 citations62
US6628094B2Sep 30, 2003
Method and apparatus for canceling ripple current in a lamp
INFOCUS CORP4 citations62
IN FOCUS SYSTEMS INC
3 patentsUS5855488AJan 5, 1999
Protection lamp safety interconnect apparatus and method
IN FOCUS SYSTEMS INC48 citations91
US5861718AJan 19, 1999
ARC lamp igniter apparatus and method
IN FOCUS SYSTEMS INC9 citations73
US6476566B2Nov 5, 2002
Method and apparatus for canceling ripple current in a lamp
IN FOCUS SYSTEMS INC4 citations62