with discharge additionally constricted by envelope

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a glass reflector
- Patent number 7,644,596
- Issue date Jan 12, 2010
- Iwasaki Electric Co., Ltd.
- Makoto Ookahara
- F21 - LIGHTING
Information Patent Grant
Metal halide lamp
- Patent number 7,468,585
- Issue date Dec 23, 2008
- Panasonic Corporation
- Atsushi Utsubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-pressure discharge lamp and lighting apparatus
- Patent number 6,307,321
- Issue date Oct 23, 2001
- Toshiba Lighting & Technology Corporation
- Hisashi Honda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Planar cold cathode lamp with reflecting surfaces
- Patent number 5,608,288
- Issue date Mar 4, 1997
- General Motos Corporation
- Ronald H. Haag
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gas discharge lamp temperature control
- Patent number 5,245,246
- Issue date Sep 14, 1993
- BHK, Inc.
- Steven H. Boland
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-pressure sodium discharge lamp
- Patent number 4,527,097
- Issue date Jul 2, 1985
- U.S. Philips Corporation
- Rudolf L. A. van der Heijden
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
2096357
- Patent number 2,096,357
- Issue date Oct 19, 1937
- H01 - BASIC ELECTRIC ELEMENTS