US3092455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making aluminum nitride
Assignee: Pechiney SA
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Filing: 1960-02-11
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Granted: 1963-06-04
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Expires: 1980-02-11
Abstract
No abstract record available.
Inventors
- 👤 Paris Rene Antoine
- 👤 Perieres Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:31
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/072; C01B21/0726; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/1921; G05D23/20; G05D23/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS OF MAKING ALUMINUM NITRIDE COMPRISING THE STEPS OF CONTACTING ALUMINUM OXIDE WITH A NATURAL GAS FORMED OF HYDROCARBONS CONTAINING FROM 1 TO 4 CARBON ATOMS AND IN AN AMOUNT TO PROVIDE AT LEAST 3 ATOMS OF CARBON PER MOLECULE OF AL2O3 AND HEATING THE MATERIALS TO A TEMPERATURE WITHIN THE RANGE OF 1200*C. TO 1750*C. WHEREBY HYDROCARBON IS DISSOCIATED TO FROM TAINED BY THE ALUMINUM OXIDE, INTRODUCING NITROGEN INTO CONTACT WITH THE ALUMINUM OXIDE-CARBON IN AN AMOUNT CORRESPONDING TO AT LEAST ONE MOL OF N2 PER MOL OF AL2O3, AND HEATING TO A TEMPERATURE WITHIN THE RANGE OF 1200*C TO 1750*C. TO PRODUCE CO WHICH GOES OFF AS A GAS AND AIN WHICH IS RETAINED AS A PRODUCT.
Claim 2
Dependent Claim
120 words
A PROCESS OF MAKING ALUMINUM NITRIDE COMPRISING THE STEPS OF CONTACTING ALUMINUM OXIDE WITH A NATURAL GAS FORMED OF HYDROCARBONS CONTAINING FROM 1 TO 4 CARBON ATOMS AND IN AN AMOUNT TO PROVIDE AT LEAST 3 ATOMS OF CARBON PER MOLECULE OF AL2O3 AND HEATING THE MATERIALS TO A TEMPERATURE WITHIN THE RANGE OF 1200*C. TO 1750*C. WHEREBY HYDROCARBON IS DISSOCIATED TO FROM TAINED BY THE ALUMINUM OXIDE, INTRODUCING NITROGEN INTO CONTACT WITH THE ALUMINUM OXIDE-CARBON IN AN AMOUNT CORRESPONDING TO AT LEAST ONE MOL OF N2 PER MOL OF AL2O3, AND HEATING TO A TEMPERATURE WITHIN THE RANGE OF 1200*C TO 1750*C. TO PRODUCE CO WHICH GOES OFF AS A GAS AND AIN WHICH IS RETAINED AS A PRODUCT.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |