Patent US3326701A successfully refreshed from Google Patents.
US3326701A
Expired / Lapsed
US
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Formation of solid bodies
Assignee: PQ Corp
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Filing: 1963-01-11
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Granted: 1967-06-20
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Expires: 1983-01-11
Abstract
No abstract record available.
Inventors
- 👤 Freyhold Helmut Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:37
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/162; B22C1/18; C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
A METHOD FOR THE PREPARATION OF MOLDED PARTICLES WHICH CONSISTS ESSENTIALLY OF: (A) PROVIDING AN AQUEOUS SODIUM SILICATE SOLUTION HAVING AN SIO2:NA2O MOL RATIO FROM 1.4 TO 4.4 AND A CONCENTRATION RANGING FROM 38 TO 60* BAUME, (B) ADMIXING WITH SAID SODIUM SILICATE SOLUTION AN AQUEOUS SOLUTION OF ALKALI METAL HYPOCHLORITE CONTAINING FROM 3 TO 18% AVAILABLE CHLORINE BY VOLUME TO THEREBY FORM A BINDER COMPOSITION, (C) MIXING SAID BINDER COMPOSITION WITH A REFRACTORY INERT FILLER IN THE AMOUNT 2 TO 10% BY WEIGHT BASED ON THE WEIGHT OF THE FILLER, (D) SHAPING IN THE DESIRED FORM, (E) PASSING AN ACIDIC GAS THERETHROUGH, THEREBY FORMING A SOLID BODY HAVING A GREEN STRENGTH IN EXCESS OF THAT OBTAINED WHEN SODIUM SILICATE ALONE IS USED AS A BINDER COMPOSITION.
Claim 2
Independent Claim
127 words
A METHOD FOR THE PREPARATION OF MOLDED PARTICLES WHICH CONSISTS ESSENTIALLY OF: (A) PROVIDING AN AQUEOUS SODIUM SILICATE SOLUTION HAVING AN SIO2:NA2O MOL RATIO FROM 1.4 TO 4.4 AND A CONCENTRATION RANGING FROM 38 TO 60* BAUME, (B) ADMIXING WITH SAID SODIUM SILICATE SOLUTION AN AQUEOUS SOLUTION OF ALKALI METAL HYPOCHLORITE CONTAINING FROM 3 TO 18% AVAILABLE CHLORINE BY VOLUME TO THEREBY FORM A BINDER COMPOSITION, (C) MIXING SAID BINDER COMPOSITION WITH A REFRACTORY INERT FILLER IN THE AMOUNT 2 TO 10% BY WEIGHT BASED ON THE WEIGHT OF THE FILLER, (D) SHAPING IN THE DESIRED FORM, (E) PASSING AN ACIDIC GAS THERETHROUGH, THEREBY FORMING A SOLID BODY HAVING A GREEN STRENGTH IN EXCESS OF THAT OBTAINED WHEN SODIUM SILICATE ALONE IS USED AS A BINDER COMPOSITION.
Claim 3
Dependent Claim
38 words
A MOLDING COMPOSITION COMPRISING AN ADMIXTURE OF AN INERT REFRACTORY MATERIAL AND A BINDER COMPOSITION CONSISTING ESSENTIALLY OF: (A) 80-95% BY WEIGHT OF AN ALKALI METAL SILICATE SOLUTION, AND (B) 5-20% BY WEIGHT OF AN ALKALI METAL HYPOCHLORITE.
Claim 4
Dependent Claim
38 words
A MOLDING COMPOSITION COMPRISING AN ADMIXTURE OF AN INERT REFRACTORY MATERIAL AND A BINDER COMPOSITION CONSISTING ESSENTIALLY OF: (A) 80-95% BY WEIGHT OF AN ALKALI METAL SILICATE SOLUTION, AND (B) 5-20% BY WEIGHT OF AN ALKALI METAL HYPOCHLORITE.
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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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |