Inventor
FERGASON JOHN D
US24 patents
⚠️ This page may combine multiple inventors who share the name “FERGASON JOHN D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OSD ENVIZION COMPANY
7 patentsUS5208688AMay 4, 1993
Eye protection device for welding helmets
OSD ENVIZION COMPANY266 citations98
US5515186AMay 7, 1996
Eye protection device for welding helmets which reduces obliquely incident light
OSD ENVIZION COMPANY104 citations97
US5377032ADec 27, 1994
Electro-optic light shutter and frame assembly with integrated switching mechanism
OSD ENVIZION COMPANY117 citations97
US5248880ASep 28, 1993
Detector system for detecting the occurrence of welding
OSD ENVIZION COMPANY85 citations96
US5252817AOct 12, 1993
Detector system for detecting the occurrence of welding using detector feedback
OSD ENVIZION COMPANY63 citations95
US5347383ASep 13, 1994
High speed, low power driving circuit for liquid crystal shutter
OSD ENVIZION COMPANY39 citations92
USD353692SDec 20, 1994
Welding lens assembly
OSD ENVIZION COMPANY12 citations73
LIGHTSWITCH SAFETY SYSTEMS INC
5 patentsUS7342210B2Mar 11, 2008
Remote control for auto-darkening lens systems and method
LIGHTSWITCH SAFETY SYSTEMS INC133 citations97
US7150047B2Dec 19, 2006
Indicator layout on an auto-darkening lens for use in welding
LIGHTSWITCH SAFETY SYSTEMS INC90 citations97
US7501613B2Mar 10, 2009
Light detecting and angle of view compensation for optical devices and method
LIGHTSWITCH SAFETY SYSTEMS INC24 citations92
US7161135B2Jan 9, 2007
Multi-stage sensor for an auto-darkening lens for use in welding and method
LIGHTSWITCH SAFETY SYSTEMS INC22 citations92
US7550698B2Jun 23, 2009
Light sensor arrangement for auto-darkening lenses and method
LIGHTSWITCH SAFETY SYSTEMS INC13 citations84
FERGASON PATENT PROPERTIES LLC
4 patentsUS7347551B2Mar 25, 2008
Optical system for monitoring eye movement
FERGASON PATENT PROPERTIES LLC228 citations99
US7553021B2Jun 30, 2009
Optical system for monitoring eye movement
FERGASON PATENT PROPERTIES LLC16 citations84
US9244279B1Jan 26, 2016
Glasses-type augmented reality display system
FERGASON PATENT PROPERTIES LLC6 citations73
US9443479B2Sep 13, 2016
Image acquisition and display system and method using information derived from an area of interest in a video image implementing system synchronized brightness control and use of metadata
FERGASON PATENT PROPERTIES LLC0 citations52
OSD ENVIZION INC
3 patentsUS5751258AMay 12, 1998
Liquid crystal lens driver electronics for eye protection, high speed shuttering with consistent performance
OSD ENVIZION INC163 citations98
US6067129AMay 23, 2000
Welding lens with integrated display and method
OSD ENVIZION INC89 citations97
US5959705ASep 28, 1999
Welding lens with integrated display, switching mechanism and method
OSD ENVIZION INC81 citations95