US Patent No: 7,052,721
Number of patents in Portfolio can not be more than 2000
Recovery of compounds using a natural adsorbent
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May 30, 2006
Issued date -
Apr 5, 2001
filing date -
10/240,650
serial no -
In Force
status
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Abstract
The invention provides a method for recovery of compounds by adsorption fish scales. The method can be used for natural and synthetic compounds such as various natural pigments including astaxanthin in an esterified or not and synthetic astaxanthin in free form, or other carotenoid compounds. Fish scales with an adsorbed compound may be used as a source of the compound both for human and animal consumption. In particular, fish scales with adsorbed astaxanthin provide a calcium-rich nutritional supplement with beneficial anti-oxidant properties.
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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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| 4,505,936 Process for the utilization of shellfish waste | 9 | 1983 | |
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| 7,118,226 Sequential color recapture for image display systems | 5 | 2005 | |
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| 5,210,186 Method for recovery and separation of chitin, proteins and astaxanthin and esters thereof | 4 | 1991 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 30, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 30, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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 |