US3129170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the clarification of an acidic inorganic phosphatic solution
Assignee: International Minerals and Chemical Corp
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Filing: 1960-10-25
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Granted: 1964-04-14
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Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Ittlinger Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:08
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/235; C02; C02F; C02F1/00; C02F1/52; C02F1/54; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR THE CLARIFICATION OF AN ACIDIC INORGANIC PHOPHATIC SOLUTION CONTAINING SUSPENDED SOLID IMPURITIES WHICH COMPRISES MIXING SAID SOLUTION WITH A CLARIFICATION AGENT COMPRISING AN AMINE CLARIFICATION AGENT SELECTED FROM THE GROUP CONSISTING OF SUBSTANTIALLY WATER INSOLUBLE ALIPHATIC AMINES, ACID ADDITION SALTS OF ALIPHATIC AMINES, QUATERNARY AMMONIUM SALTS OF ALIPHATIC AMINES, AND MIXTURES THEREOF, SAID CLARIFICATION AGENT BEING EMPLOYED IN A MINOR PROPORTION EFFECTIVE TO INCREASE THE SETTLING RATE OF SAID SUSPENDED SOLIDS, AND THEREAFTER SEPARATING A CLARIFIED FRACTION.
Claim 2
Dependent Claim
80 words
A PROCESS FOR THE CLARIFICATION OF AN ACIDIC INORGANIC PHOPHATIC SOLUTION CONTAINING SUSPENDED SOLID IMPURITIES WHICH COMPRISES MIXING SAID SOLUTION WITH A CLARIFICATION AGENT COMPRISING AN AMINE CLARIFICATION AGENT SELECTED FROM THE GROUP CONSISTING OF SUBSTANTIALLY WATER INSOLUBLE ALIPHATIC AMINES, ACID ADDITION SALTS OF ALIPHATIC AMINES, QUATERNARY AMMONIUM SALTS OF ALIPHATIC AMINES, AND MIXTURES THEREOF, SAID CLARIFICATION AGENT BEING EMPLOYED IN A MINOR PROPORTION EFFECTIVE TO INCREASE THE SETTLING RATE OF SAID SUSPENDED SOLIDS, AND THEREAFTER SEPARATING A CLARIFIED FRACTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |