US2928725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of ferrous sulfate monohydrate suspensions
Assignee: British Titan Products Co Ltd
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Filing: 1959-04-27
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Granted: 1960-03-15
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hughes William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:32
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/14; Y; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR PREPARING A SPAYABLE SLURRY OF FERROUS SULFATE FROM COPPERAS WHICH COMPRISES FORMING A WATER SOLUTION OF FERROUS SULFATE SATURATED WITH RESPECT TO FERROUS SULFATE MONOHYDRATE, AND THEREAFTER WHILE MAINTAINING THE TEMPERATURE OF SAID SOLUTION ABOVE ABOUT 60* C. ADDING COPPERAS TO SAID SATURATED SOLUTION TO FORM A SUSPENSION OF FERROUS SULFATE MONOHYDRATE HAVING AN OVERALL CONCENTRATION LYING BETWEEN THAT OF SAID SATURATED WATER SOLUTION AND THE CONCENTRATION REPRESENTED BY THE RELATIONSHIP FESO4:7H2O.
Claim 2
Dependent Claim
75 words
A PROCESS FOR PREPARING A SPAYABLE SLURRY OF FERROUS SULFATE FROM COPPERAS WHICH COMPRISES FORMING A WATER SOLUTION OF FERROUS SULFATE SATURATED WITH RESPECT TO FERROUS SULFATE MONOHYDRATE, AND THEREAFTER WHILE MAINTAINING THE TEMPERATURE OF SAID SOLUTION ABOVE ABOUT 60* C. ADDING COPPERAS TO SAID SATURATED SOLUTION TO FORM A SUSPENSION OF FERROUS SULFATE MONOHYDRATE HAVING AN OVERALL CONCENTRATION LYING BETWEEN THAT OF SAID SATURATED WATER SOLUTION AND THE CONCENTRATION REPRESENTED BY THE RELATIONSHIP FESO4:7H2O.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |