High pressure sodium discharge lamps with hydrogen getter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4806828
SERIAL NO

07047274

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An arc tube (13) for a high pressure sodium discharge lamp (10) contains a quantity of a getter materal which comprises an alloy of titanium and niobium metal. The alloy is in the form of a coiled wire (31) which is wound on a tungsten electrode shank (29). The wire may have a sheath of niobium metal.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THORN EMI PLCLONDON2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hurst, Derek P Leicestershire, GB2 2 8

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
* 4599543 Time fuse for high pressure sodium lamps 5 1986
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
STANLEY ELECTRIC CO., LTD. (1)
* 6121729 Metal halide lamp 4 1997
 
IWASAKI ELECTRIC CO., LTD. (1)
* 2012/0153,819 ELECTRODE, MANUFACTURING METHOD THEREFOR, AND HIGH PRESSURE DISCHARGE LAMP 1 2010
 
Composite Materials Technology, Inc. (1)
* 4925741 Getter wire 12 1989
 
PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBH (1)
* 6369508 Mercury short-arc lamp with niobium getter 3 2000
* Cited By Examiner