Patent US3235499A successfully refreshed from Google Patents.
Patent US3007792A successfully refreshed from Google Patents.
US3007792A
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Preparation of spongy or ultra-finely divided substances
Assignee: LABORATOIRE DE RECHERCHE ET DE CONTROLE DU CAOUTCHOUC
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Filing: 1959-06-22
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Granted: 1961-11-07
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ortlieb Claude
- 👤 Sinn Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:41
CPC Classifications
C; C22; C22B; C22B26/00; B; B01; B01J; B01J23/00; B01J23/02; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1143; B22F9/00; B22F9/16; B22F9/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A METHOD OF CONVERTING A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI-METALS AND ALKALINEEARTH METALS TO A MASS HAVING A HIGH SURFACE-TO-VOLUME RATIO, THE STEP OF REACTING SAID METAL WITH AMMONIA, TO PROVIDE AN AMMONIA COMPOUND OF SAID METAL, AND THEN HEATING THE COMPOUND TO ELIMINATE THE AMMONIA THEREFROM WHEREBY TO REGENERATE SAID METAL IN THE FORM OF A SPONGE-LIKE OR ULTRA-DIVIDED MASS.
Claim 2
Dependent Claim
66 words
IN A METHOD OF CONVERTING A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI-METALS AND ALKALINEEARTH METALS TO A MASS HAVING A HIGH SURFACE-TO-VOLUME RATIO, THE STEP OF REACTING SAID METAL WITH AMMONIA, TO PROVIDE AN AMMONIA COMPOUND OF SAID METAL, AND THEN HEATING THE COMPOUND TO ELIMINATE THE AMMONIA THEREFROM WHEREBY TO REGENERATE SAID METAL IN THE FORM OF A SPONGE-LIKE OR ULTRA-DIVIDED MASS.
References Cited (Backward Citations)
US1805199A
Cited
US2751288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |