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Franciscus A. S. Ligthart deceased
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late of Eindhoven, Valkenswaard, NL
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Patents Grants
last 30 patents
Information
Patent Grant
Discharge lamp with specific fill and luminescent layers
Patent number
6,060,831
Issue date
May 9, 2000
U.S. Philips Corporation
Christianus J. Roozekrans
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low-pressure mercury discharge meander lamp dimensioned for even il...
Patent number
5,982,089
Issue date
Nov 9, 1999
U.S. Philips Corporation
Gustaaf A. Wesselink
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Neon discharge lamp
Patent number
5,825,125
Issue date
Oct 20, 1998
U.S. Philips Corporation
Franciscus A. S. Ligthart
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low pressure mercury vapor discharge lamp
Patent number
5,719,465
Issue date
Feb 17, 1998
U.S. Philips Corporation
Peter M. Den Breeijen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low-pressure discharge lamp and luminaire provided with such a lamp
Patent number
5,387,837
Issue date
Feb 7, 1995
U.S. Philips Corporation
Bauke J. Roelevink
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electrodeless low-pressure mercury vapour discharge lamp
Patent number
5,239,238
Issue date
Aug 24, 1993
U.S. Philips Corporation
Jozef R. M. Bergervoet
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low-pressure mercury vapor discharge lamp
Patent number
5,233,268
Issue date
Aug 3, 1993
U.S. Philips Corporation
Jean J. Heuvelmans
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low-pressure mercury vapor discharge lamp
Patent number
4,546,285
Issue date
Oct 8, 1985
U.S. Philips Corporation
Jean J. Heuvelmans
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low-pressure mercury vapor discharge lamp
Patent number
4,335,330
Issue date
Jun 15, 1982
U.S. Philips Corporation
Robert C. Peters
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Low-pressure mercury vapor discharge lamp
Patent number
4,277,720
Issue date
Jul 7, 1981
U.S. Philips Corporation
Winston D. Couwenberg
H01 - BASIC ELECTRIC ELEMENTS