METHOD FOR PRODUCING A POORLY SOLUBLE CALCIUM-ARSENIC COMPOUND
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United States of America Patent
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N/A
Issued Date -
Dec 26, 2013
app pub date -
Mar 7, 2012
filing date -
Mar 9, 2011
priority date (Note) -
Published
status (Latency Note)
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Abstract
The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is neutralised before being routed to an arsenic oxidation stage,and a poorly soluble calcium-arsenic compound is precipitated from the solution, in which all the arsenic is pentavalent.
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
OUTOTEC OYJ | 02201 ESPOO |
International Classification(s)

- 2012 Application Filing Year
- C02F Class
- 1006 Applications Filed
- 859 Patents Issued To-Date
- 85.39 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Riihimäki, Teppo | Linnavuori, FI | 8 | 14 |
# of filed Patents : 8 Total Citations : 14 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- C02F Class
- 0 % this patent is cited more than
- 12 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 | Jun 26, 2025 |
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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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