Light emitting diode based PAPI design incorporating linear diode arrays, cylindrical optics, and linear light combining mirror
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 -
N/A
app pub date -
Jul 1, 2013
filing date -
Jul 1, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Abstract
This invention presents a method for overcoming limitation in brightness and heating effects for LED based Precision Approach Path Indicators and allowing both colors to be imaged in the far field with the proper abrupt transition between the red and white sectors. This method relies on the use of linear arrays of LED's and cylindrical optics.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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LASER GUIDANCE INC | 14746 NE 95TH STREET REDMOND WA 98052-2519 |
International Classification(s)

- 2013 Application Filing Year
- F21V Class
- 3052 Applications Filed
- 2652 Patents Issued To-Date
- 86.90 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Shemwell, David Mark | Newcastle, US | 7 | 4 |
# of filed Patents : 7 Total Citations : 4 | |||
Vetter, Alan August | Duarte, US | 3 | 3 |
# of filed Patents : 3 Total Citations : 3 |
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Patent Citation Ranking
- 2 Citation Count
- F21V Class
- 9.38 % this patent is cited more than
- 10 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 1, 2026 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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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