
US Patent No: 7,595,929
Number of patents in Portfolio can not be more than 2000
Grooved backside acoustic termination of acousto-optic devices
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Sep 29, 2009
Issued date -
May 30, 2007
filing date -
11/809,295
serial no -
In Force
status
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Abstract
An acousto-optic device having at least one groove on the backside improves acoustic termination of the device. The grooves can be added early in device fabrication and are compatible with batch processing, thereby avoiding the separate device handling. Grooving can be performed on the cell, before it is mounted to a batch plate. This simplifies batch plate processing by using a backside that remains parallel to the bondface.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 7,054,055 Acousto optic element | 1 | 2004 | |
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| 4,582,397 Diospersive acousto-optic filter | 7 | 1983 | |
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| 4,512,638 Wire grid polarizer | 49 | 1982 | |
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| 5,097,512 Transducer testing | 6 | 1990 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Mar 29, 2013 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 29, 2017 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 29, 2021 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |