Patent US4036060A successfully refreshed from Google Patents.
Patent US4093541A successfully refreshed from Google Patents.
US4093541A
Expired / Lapsed
US
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Method for the removal of metallic mercury
Assignee: Tecneco SpA
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Filing: 1976-09-30
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Granted: 1978-06-06
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Expires: 1996-09-30
Abstract
Abstract A method is disclosed for removing metallic mercury from industrial sewage waters, the improvement consisting in that the polluted liquors are treated with activated carbon having a high specific surface.
Inventors
- 👤 Carlo Piccinini
- 👤 Vincenzo Conti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:41
CPC Classifications
B; B01; B01D; B01D15/00; C; C02; C02F; C02F1/00; C02F1/28; C02F1/283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A method for the removal of metallic mercury from previously untreated industrial sewage waters containing it, comprising the step of contacting said sewage waters with activated carbon having a surface area of at least 350 square meters per gram.
Claim 2
Independent Claim
39 words
A method for the removal of metallic mercury from previously untreated industrial sewage waters containing it, comprising the step of contacting said sewage waters with activated carbon having a surface area of at least 350 square meters per gram.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |