US2606815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metallic nitrides
Assignee: Individual
•
Filing: 1946-02-18
•
Granted: 1952-08-12
•
Expires: 1966-02-18
Abstract
No abstract record available.
Inventors
- 👤 Frank J Sowa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:49
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/068; C01B21/064; C01B21/0612; C01B21/076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR PREPARING NITRIDES WHICH COMPRISES MAKING ALKALINE WITH A CAUSTIC ALKALI A FLUORIDE ION CONTAINING SOLUTION OF AN AMMONIA ADDITION COMPOUND OF A HALIDE OF AN ELEMENT SELECTED FROM THE GROUP OF ELEMENTS WHICH FORM AMMONIA ADDITION COMPOUNDS OF THEIR HALIDES AND CONSISTING OF BORON, BERYLLIUM, TITANIUM AND SILICON, HEATING THE RESULTING REACTION PRODUCT, AND SEPARATING THE RESULTING NITRIDE FROM THE REACTION MASS.
Claim 2
Dependent Claim
65 words
A PROCESS FOR PREPARING NITRIDES WHICH COMPRISES MAKING ALKALINE WITH A CAUSTIC ALKALI A FLUORIDE ION CONTAINING SOLUTION OF AN AMMONIA ADDITION COMPOUND OF A HALIDE OF AN ELEMENT SELECTED FROM THE GROUP OF ELEMENTS WHICH FORM AMMONIA ADDITION COMPOUNDS OF THEIR HALIDES AND CONSISTING OF BORON, BERYLLIUM, TITANIUM AND SILICON, HEATING THE RESULTING REACTION PRODUCT, AND SEPARATING THE RESULTING NITRIDE FROM THE REACTION MASS.
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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |