US2860034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of converting a finely-divided substantially anhydrous sodium metasilicate into a non-dusting granular form
Assignee: Pennwalt Corp
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Filing: 1955-01-28
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Granted: 1958-11-11
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Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 Mockrin Isadore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/32; C01B33/325
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF CONVERTING A FINELY-DIVIDED SUBSTANTIALLY ANHYDROUS SODIUM METASILICATE INTO A NON-DUSTING GRANULAR FORM COMPRISING BLENDING 85 TO 55 PARTS BY WEIGHT OF SAID FINELY-DIVIDED SUBSTANTIALLY ANHYDROUS SODIUM METASILICATE WITH 15 TO 45 PARTS BY WEIGHT OF A FINELY-DIVIDED SODIUM METASILICATE HYDRATE OF 5 TO 6 MOLECULES COMBINED WATER, SAID BLENDING BEING DONE AT A TEMPERATURE BETWEEN THE MELTING TEMPERATURES OF SAID HYDRATE AND SAID ANHYDROUS SODIUM METASILICATE AND CONTINUING SAID BLENDING UNTIL A SUBSTANTIALLY, UNIFORM GRANULAR PRODUCT IS OBTAINED.
Claim 2
Independent Claim
81 words
THE METHOD OF CONVERTING A FINELY-DIVIDED SUBSTANTIALLY ANHYDROUS SODIUM METASILICATE INTO A NON-DUSTING GRANULAR FORM COMPRISING BLENDING 85 TO 55 PARTS BY WEIGHT OF SAID FINELY-DIVIDED SUBSTANTIALLY ANHYDROUS SODIUM METASILICATE WITH 15 TO 45 PARTS BY WEIGHT OF A FINELY-DIVIDED SODIUM METASILICATE HYDRATE OF 5 TO 6 MOLECULES COMBINED WATER, SAID BLENDING BEING DONE AT A TEMPERATURE BETWEEN THE MELTING TEMPERATURES OF SAID HYDRATE AND SAID ANHYDROUS SODIUM METASILICATE AND CONTINUING SAID BLENDING UNTIL A SUBSTANTIALLY, UNIFORM GRANULAR PRODUCT IS OBTAINED.
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) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |