US3003010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of precipitated calcium carbonates
Assignee: Solvay SA
•
Filing: 1958-03-17
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Granted: 1961-10-03
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Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Meuret Fernand
- 👤 Brouwers Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:58
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/18; B; B82; B82Y; B82Y30/00; C01F11/182; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C09; C09C; C09C1/00; C09C1/02; C09C1/021; C09C1/022; C09C1/024; C01P; C01P2004/00; C01P2004/60; C01P2004/64; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE PREPARATION OF PRECIPITATED CALCIUM CARBONATE PARTICULARLY SUITABLE AS A FILLER FOR NATURAL AND SYNTHETIC RUBBER AND AS A PIGMENT FOR PAPER COATINGS WHICH COMPRISES THE STEPS OF PREPARING A MILK OF LIME SOLUTION, ADDING TO SAID MILK OF LIME SOLUTION A SOLUBLE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM ALUMINATE (NA2AL2O4), ALUMINUM SULPHATE (AL2(SO4)3), MAGNESIUM SULPHATE (MGSO4), VANADYL SULPHATE
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE PREPARATION OF PRECIPITATED CALCIUM CARBONATE PARTICULARLY SUITABLE AS A FILLER FOR NATURAL AND SYNTHETIC RUBBER AND AS A PIGMENT FOR PAPER COATINGS WHICH COMPRISES THE STEPS OF PREPARING A MILK OF LIME SOLUTION, ADDING TO SAID MILK OF LIME SOLUTION A SOLUBLE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM ALUMINATE (NA2AL2O4), ALUMINUM SULPHATE (AL2(SO4)3), MAGNESIUM SULPHATE (MGSO4), VANADYL SULPHATE
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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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |