US3261666A
Expired / Lapsed
US
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Method of producing nitrides of aluminum and boron
Assignee: Stauffer Chemical Co
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Filing: 1962-05-08
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Granted: 1966-07-19
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Expires: 1982-05-08
Abstract
No abstract record available.
Inventors
- 👤 Benjamin J Luberoff
- 👤 Robert N Rickles
- 👤 Robert W Stuchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:20
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/064; C01B21/0645; C01B21/072; C01B21/0726
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS OF PRODUCING THE NITRIDE OF AN ELEMENT OF GROUP IIIA OF THE PERIODIC SYSTEM SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND BORON WHICH COMPRISES HEATING AT A TEMPERATURE RANGING FROM ABOUT 800*C. TO ABOUT 1350*C. IN THE PRESENCE OF SILICA AND UNDER A NON-OXIDIZING ATMOSPHERE, ONE OXIDIC EQUIVALENT OF THE ELEMENT INCLUDING THE BASIS METAL ALUMINATE AND BORATE EQUIVALENT THEREOF WITH A BASIS METAL SALT SELECTED FROM THE CLASS CONSISTING OF BASIS METAL CYANAMIDES AND CYANIDES THE QUANTITY OF BASIC METAL SALT BEING SUFFICIEN! TO PROVIDE AT LEAST 1 EQUIVALENT OF CYANIDE AND ISOLATING THE SO-FORMED NITRIDE BY LEACHING OUT THE REACTION BY-PRODUCTS.
Claim 2
Dependent Claim
106 words
A PROCESS OF PRODUCING THE NITRIDE OF AN ELEMENT OF GROUP IIIA OF THE PERIODIC SYSTEM SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND BORON WHICH COMPRISES HEATING AT A TEMPERATURE RANGING FROM ABOUT 800*C. TO ABOUT 1350*C. IN THE PRESENCE OF SILICA AND UNDER A NON-OXIDIZING ATMOSPHERE, ONE OXIDIC EQUIVALENT OF THE ELEMENT INCLUDING THE BASIS METAL ALUMINATE AND BORATE EQUIVALENT THEREOF WITH A BASIS METAL SALT SELECTED FROM THE CLASS CONSISTING OF BASIS METAL CYANAMIDES AND CYANIDES THE QUANTITY OF BASIC METAL SALT BEING SUFFICIEN! TO PROVIDE AT LEAST 1 EQUIVALENT OF CYANIDE AND ISOLATING THE SO-FORMED NITRIDE BY LEACHING OUT THE REACTION BY-PRODUCTS.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |