US3336100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of molybdenum dioxide
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
•
Filing: 1964-02-26
•
Granted: 1967-08-15
•
Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Cloppet Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:04
CPC Classifications
C; C01; C01G; C01G39/00; C01G39/02; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR THE PRODUCTION OF MOLYBDENUM DIOXIDE COMPRISING: (A) MIXING FINELY DIVIDED PRODUCTS CONTAINING STOICHIOMETRIC AMOUNTS OF MOO3 AND MOS2 TO FORM A REACTION MIXTURE; (B) HEATING SAID REACTION MIXTURE TO SUBSTANTIALLY BETWEEN 600*C. AND 700*C. IN A CLOSED CHAMBER TO FREELY EVOLVE SO2 AND MAINTAINING A PRESSURE IN THE CHAMBER SLIGHTLY ABOVE ATMOSPHERIC PRESSURE TO PREVENT AIR FRO ENTERING THE CHAMBER THEREBY FORMING A REACTION PRODUCT HAVING A LOW SULFUR CONTENT; (C) DESULPHURIZING SAID REACTION PRODUCT IN AN ATMOSPHERE THAT CONTAINS LESS THAN 10% SO2 AND AT A TEMPERATURE SUBSTANTIALLY BETWEEN 400*C. AND 600*C. TO OBTAIN MOLYBDENUM DIOXIDE; AND (D) COOLING SAID MOLYBDENUM DIOXIDE TO AT LEAST 250*C. UNDER ONE OF A NEUTRAL AND OF A REDUCING ATMOSPHERE.
Claim 2
Dependent Claim
120 words
A PROCESS FOR THE PRODUCTION OF MOLYBDENUM DIOXIDE COMPRISING: (A) MIXING FINELY DIVIDED PRODUCTS CONTAINING STOICHIOMETRIC AMOUNTS OF MOO3 AND MOS2 TO FORM A REACTION MIXTURE; (B) HEATING SAID REACTION MIXTURE TO SUBSTANTIALLY BETWEEN 600*C. AND 700*C. IN A CLOSED CHAMBER TO FREELY EVOLVE SO2 AND MAINTAINING A PRESSURE IN THE CHAMBER SLIGHTLY ABOVE ATMOSPHERIC PRESSURE TO PREVENT AIR FRO ENTERING THE CHAMBER THEREBY FORMING A REACTION PRODUCT HAVING A LOW SULFUR CONTENT; (C) DESULPHURIZING SAID REACTION PRODUCT IN AN ATMOSPHERE THAT CONTAINS LESS THAN 10% SO2 AND AT A TEMPERATURE SUBSTANTIALLY BETWEEN 400*C. AND 600*C. TO OBTAIN MOLYBDENUM DIOXIDE; AND (D) COOLING SAID MOLYBDENUM DIOXIDE TO AT LEAST 250*C. UNDER ONE OF A NEUTRAL AND OF A REDUCING ATMOSPHERE.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |