ELECTRODE FOR HOT CATHODE FLUORESCENT LAMP
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Oct 21, 2010
app pub date -
Jan 2, 2008
filing date -
Dec 27, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Abstract
An electrode of a hot cathode fluorescent lamp includes a pair of lead wires which are inserted from the outside into a glass tube, passing through a leading end of the glass tube, ends of each of the pair of lead wires protruding outward from an outer surface and inward from an inner surface of the glass tube, respectively, shape-keeping members with leading ends welded into and fixed to leading ends of the lead wires, respectively which protrude inward from the inner surface of the glass tube, a filament coil provided with leg portions which surround the shape-keeping members and are welded into and fixed to the lead wires along with the shape-keeping members at both leading ends of a coil portion for emitting electrons, and a sleeve installed inside the glass tube and surrounding the filament coil.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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KUMHO ELECTRIC INC | 418 MAPO-DONG MAPO-GU SEOUL |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Kim, Byung Hyun | Gyeonggi-do, KR | 64 | 61 |
# of filed Patents : 64 Total Citations : 61 | |||
Lee, Young Bok | Kwangju-si, KR | 49 | 159 |
# of filed Patents : 49 Total Citations : 159 |
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- 15 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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