US3152001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a filler
Assignee: Bayer AG
•
Filing: 1961-02-15
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Granted: 1964-10-06
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Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Podschus Ernst
- 👤 Joseph Werner
- 👤 Clamroth Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:34
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K3/34; C09; C09C; C09C1/00; C09C1/0081; C09C1/0093; C01; C01P; C01P2004/00; C01P2004/50; C01P2004/60; C01P2004/64; C01P2004/80; C01P2006/00; C01P2006/12; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE MANUFACTURE OF A SILICEOUS CALCIUM CARBONATE PIGMENT WHICH COMPRISES PRECIPITATING A SUSPENSION OF FINELY DIVIDED, CALCIUM CARBONATE, PROMPTLY DISTRIBUTING SAID CALCIUM CARBONATE SUSPENSION IN ONE OF TWO AQUEOUS SOLUTIONS WHICH SOLUTIONS UPON REACTION WITH ONE ANOTHER PRECIPITATE A DIFFICULTY SOLUBLE SILICATE AND MIXING SAID AQUEOUS SOLUTIONS WHEREBY TO PRECIPITATE SAID DIFFICULTY SOLUBLE SILICATE IN A SLURRY OF SAID CALCIUM CARBONATE.
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE MANUFACTURE OF A SILICEOUS CALCIUM CARBONATE PIGMENT WHICH COMPRISES PRECIPITATING A SUSPENSION OF FINELY DIVIDED, CALCIUM CARBONATE, PROMPTLY DISTRIBUTING SAID CALCIUM CARBONATE SUSPENSION IN ONE OF TWO AQUEOUS SOLUTIONS WHICH SOLUTIONS UPON REACTION WITH ONE ANOTHER PRECIPITATE A DIFFICULTY SOLUBLE SILICATE AND MIXING SAID AQUEOUS SOLUTIONS WHEREBY TO PRECIPITATE SAID DIFFICULTY SOLUBLE SILICATE IN A SLURRY OF SAID CALCIUM CARBONATE.
References Cited (Backward Citations)
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US2385379A
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US2314188A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |