Patent US3329520A successfully refreshed from Google Patents.
US3329520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory binder comprising organic silicates
Assignee: PQ Corp
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Filing: 1963-06-05
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Granted: 1967-07-04
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Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 Emblem Harold Garton
- 👤 Oxley Charles Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:55
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LIQUID COMPOSITION SUITABLE FOR USE AS A BINDER FOR REFRACTORY POWDER WHEN DILUTED WITH WATER WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF: (A) AN ALKYL SILICATE HAVING UP TO 4 CARBON ATOMS IN EACH ALKYL GROUP, AND (B) AN AMINOALKYL ORTHOSILICATE WHICH IS CAPABLE OF FORMING A GEL, WHEN MIXED WITH WATER, THE AMOUNT OF SAID AMINOALKYL ORTHOSILICATE RANGING BETWEEN 1% AND 20% BY VOLUME OF THE MIXTURE.
Claim 2
Dependent Claim
69 words
A LIQUID COMPOSITION SUITABLE FOR USE AS A BINDER FOR REFRACTORY POWDER WHEN DILUTED WITH WATER WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF: (A) AN ALKYL SILICATE HAVING UP TO 4 CARBON ATOMS IN EACH ALKYL GROUP, AND (B) AN AMINOALKYL ORTHOSILICATE WHICH IS CAPABLE OF FORMING A GEL, WHEN MIXED WITH WATER, THE AMOUNT OF SAID AMINOALKYL ORTHOSILICATE RANGING BETWEEN 1% AND 20% BY VOLUME OF THE MIXTURE.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |