Patent US3266889A successfully refreshed from Google Patents.
US3266889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extracting metals from sulfide ores using bacteria and an accelerating agent
Assignee: BC Research (Canada)
•
Filing: 1964-04-07
•
Granted: 1966-08-16
•
Expires: 1984-04-07
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Duncan
- 👤 Carol J Teather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:13
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/18; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/17; Y10S435/00; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
THE METHOD OF EXTRACTING METALS IN A SOLUBLE STATE FORM NATURALLY-OCCURING SULFIDE ORES, WHICH CONSISTS OF EXPOSING SULFIDE ORE TO AN AQUEOUS LEACHING MEDIUM FOR METALLIC SULFIDES CONTAINING SULPHIDE-OXIDIZING BACTERIAL AND A SUB-INHIBITORY CONCENTRATION OF A SUFACTANT SELECTED FROM THE GROUP CONSISTING OF POLYOXYETHLENE SORBTIAN MONOLAURATE, POLYOXYETHLENE SORBITAN MONOPALMITATE, POLYOXYETHYLENE SORBITAN MONOSTEARATE, POLYOXYETHYLENE SORBITAN MONOOLEATE, IMIDAZOLINE CATIONIC QUATERNARY, PHENYLISOOCTYL POLYETHOXY ETHANOL, NONYL PHENOXY POLYETHOXY ETHANOL, METHYLDODECYLBENZYL TRIMETHYL AMMONIUM CHLORIDE AND BIS (TRIMETHYL AMMONIUM CHLORIDE) METHYLDODECYL XYLENE, SODIUM OCTYL SULFONATE, AND AMINOFATTY ACID DERIVATIVE.
References Cited (Backward Citations)
US2829964A
Cited
US3218252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |