US3738938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonate composition and process
Assignee: CHEM PROD CORP
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Filing: 1970-09-29
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Granted: 1973-06-12
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Expires: 1990-09-29
Abstract
Abstract MIXTURES OF ALKALINE EARTH CARBONATES AND METAL OXIDES, TOGETHER WITH DISPERSANTS AND BINDER ADDITIVES ARE DRIED TO PROVIDE PRODUCTS PARTICULARLY SUITABLE FOR BULK HANDLING, STORAGE AND SHIPMENT. THE PRODUCT CAN BE PREPARED IN SUCH MANNER AS TO HAVE EXCELLENT DRY-FLOW CHARACTERISTICS, GOOD PELLICLE STRENGTH AND MODERATELY HIGH BULK DENSITY, WHILE RETAINING THE SMALL PARTICLE SIZE OF THE INDIVIDUAL CRYSTALLITIES OF WHICH THE DRIED PELLICLES ARE FOMED. THE PRODUCTS MAY BE PARTUCULARLY DAPTED FOR USE IN CERAMIC INDUSTRIES AND/OR MAY BE ADAPTED FOR USE IN AQUEOUS SUSPENSIONS, IN WHICH CASES THEY ARE PROVIDED WITH READY DISPERSIBILITY AND HIGH REACTIVITY.
Inventors
- 👤 R Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/18; C01F11/186; C01F11/188; C09; C09C; C09C1/00; C09C1/02; C09C1/021; C09C1/022; C09C1/024; C01P; C01P2002/00; C01P2002/60; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/10; C01P2006/11; C01P2006/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |