US3444098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making combustion catalysts
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1963-03-29
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Granted: 1969-05-13
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Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Henry Bottazi
- 👤 Bernard Claudel
- 👤 Yves Trambouze
- 👤 Alain De Calmes
- 👤 Henry Fould
- 👤 Pierre Yves Ledoray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:31
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/40; B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/92; B01D53/94; B01D53/944; B01J; B01J15/00; B01J23/00; B01J23/12; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2825; F01N3/2832; F01N3/2835; F01N3/2839; F01N3/2842; F01N3/2846; F01N3/285; F02; F02B; F02B51/00; F02B51/02; F02B77/00; F02B77/02; B01J2235/00; B01J35/00; B01J35/50; B01J35/56; F01N2330/00; F01N2330/08; F01N2330/10; F01N2510/00; F01N2510/06; F01N2510/061; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
A METHOD OF MAKING CATALYST WHICH COMPRISES STARTING FROM A THORIUM SALT EASY TO DECOMPOSE THERMALLY, HEATING THIS SALT AT A RATE RANGING FROM 2*C. PER MINUTE TO 10*C. PER MINUTE, THIS HEATING BEING CONDUCTED UP TO A TEMPERATURE RANGING FROM 280*C. TO 600*C. AND KEEPING THE HEATED PRODUCTS AT THE FINAL HEATING TEMPERATURE FOR AT LEAST TEN HOURS.
Claim 2
Independent Claim
59 words
A METHOD OF MAKING CATALYST WHICH COMPRISES STARTING FROM A THORIUM SALT EASY TO DECOMPOSE THERMALLY, HEATING THIS SALT AT A RATE RANGING FROM 2*C. PER MINUTE TO 10*C. PER MINUTE, THIS HEATING BEING CONDUCTED UP TO A TEMPERATURE RANGING FROM 280*C. TO 600*C. AND KEEPING THE HEATED PRODUCTS AT THE FINAL HEATING TEMPERATURE FOR AT LEAST TEN HOURS.
Claim 3
Dependent Claim
40 words
A METHOD ACCORDING TO CLAIM 1 WHEREIN SAID THORIUM SALT IS HEATED IN THE PRESENCE OF A SMALL AMOUNT OF A COMPOUND, CAPABLE OF DECOMPOSING UNDER THE ACTION OF HEAT, OF AN ELEMENT CHOSEN AMONG TRANSITION ELEMENTS AND LANTHANIDE ELEMENTS.
Claim 4
Dependent Claim
35 words
A METHOD ACCORDING TO CLAIM 5 WHEREIN THE HEATING OF THE MIXTURE OF THORIUM SALT AND OF SAID COMPOUND TAKES PLACE AT A TEMPERATURE RANGING FROM 280*C. TO 600*C., IN THE PRESENCE OF A SUPPORT.
Claim 5
Dependent Claim
13 words
A METHOD ACCORDING TO CLAIM 8 WHEREIN SAID SUPPORT IS MADE OF ASBESTOS.
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |