Inventor
AHLGREN FREDERIC F
US18 patents
⚠️ This page may combine multiple inventors who share the name “AHLGREN FREDERIC F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
15 patentsUS5587626ADec 24, 1996
Patterned optical interference coatings for only a portion of a high intensity lamp envelope
GEN ELECTRIC52 citations95
US5676579AOct 14, 1997
Patterned optical interference coatings for electric lamps
GEN ELECTRIC29 citations92
US5675677AOct 7, 1997
Lamp-to-light guide coupling arrangement for an electrodeless high intensity discharge lamp
GEN ELECTRIC54 citations92
US4891555AJan 2, 1990
Metal vapor discharge lamps
GEN ELECTRIC27 citations92
US4810932AMar 7, 1989
Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such
GEN ELECTRIC37 citations92
US6422861B1Jul 23, 2002
Quartz fusion furnace and method for forming quartz articles
GEN ELECTRIC42 citations90
US5420769AMay 30, 1995
High temperature lamp assembly with improved thermal management properties
GEN ELECTRIC46 citations90
US5705883AJan 6, 1998
Reduced length compact fluorescent lamp and method of forming same
GEN ELECTRIC39 citations89
US6502422B1Jan 7, 2003
Method for quartz crucible fabrication
GEN ELECTRIC13 citations83
US5087218AFeb 11, 1992
Incandesent lamps and processes for making same
GEN ELECTRIC14 citations73
US5045748ASep 3, 1991
Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such
GEN ELECTRIC20 citations73
US4525651AJun 25, 1985
Capacitively ballasted low voltage incandescent lamp
GEN ELECTRIC18 citations73
US5404069AApr 4, 1995
Filament support for incandescent lamps
GEN ELECTRIC15 citations71
US6799440B2Oct 5, 2004
Optical fiber deposition tube fused in deuterium atmosphere for attenuation improvement
GEN ELECTRIC12 citations69
US4839559AJun 13, 1989
Radiant energy incandescent lamp
GEN ELECTRIC6 citations60