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US2564367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation of phosphate and similar ores
Assignee: International Minerals and Chemical Corp
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Filing: 1947-09-11
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Granted: 1951-08-14
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Expires: 1967-09-11
Abstract
No abstract record available.
Inventors
- 👤 Baron Ira M Le
- 👤 Paul D V Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:42
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE PROCESS OF CONCENTRATION PHOSPHATIC ORES WHICH COMPRISES AGITATING AND AERATING AN AQUEOUS SUSPENSION OF SAID ORE IN ADMIXTURE WITH AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HUMIN OBTAINED AS A PRECIPITATE IN THE ACID HYDROLYSIS OF AT LEAST ONE CRUDE PROTEIN, DISTILLATES OF SAID HUMIN, ORGANIC SOLVENT EXTRACTS OF SAID HUMIN AND SOLVENT-FREE EXTRACTS THEREOF, AND AQUEOUS EXTRACTS OF SAID HUMIN AND SOLVENTFREE EXTRACTS THEREOF.
Claim 2
Dependent Claim
69 words
THE PROCESS OF CONCENTRATION PHOSPHATIC ORES WHICH COMPRISES AGITATING AND AERATING AN AQUEOUS SUSPENSION OF SAID ORE IN ADMIXTURE WITH AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HUMIN OBTAINED AS A PRECIPITATE IN THE ACID HYDROLYSIS OF AT LEAST ONE CRUDE PROTEIN, DISTILLATES OF SAID HUMIN, ORGANIC SOLVENT EXTRACTS OF SAID HUMIN AND SOLVENT-FREE EXTRACTS THEREOF, AND AQUEOUS EXTRACTS OF SAID HUMIN AND SOLVENTFREE EXTRACTS THEREOF.
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |