US2866685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of lithium nitride
Assignee: American Potash and Chemical Corp
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Filing: 1956-10-22
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Granted: 1958-12-30
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Expires: 1976-10-22
Abstract
No abstract record available.
Inventors
- 👤 Lam Hung Kei Henry
- 👤 Glen H Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/0607; C01B21/061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR PRODUCING LITHIUM NITRIDE COMPRISING DISPERSING FINELY DIVIDED SOLID LITHIUM METAL IN FINELY DIVIDED SOLID LITHIUM NITRIDE TO PROVIDE A SUBSTANTIALLY HOMOGENEOUS MIXTURE OF THE SOLID LITHIUM METAL AND THE SOLID LITHIUM NITRIDE, HEATING THE SO-FORMED MIXTURE IN AN ATMOSPHERE OF NITROGEN TO ABOUT 400*C. TO CONVERT THE LITHIUM METAL PRESENT TO LITHIUM NITRIDE, THEN COOLING AND RECOVERING THE LITHIUM NITRIDE.
Claim 2
Dependent Claim
63 words
A PROCESS FOR PRODUCING LITHIUM NITRIDE COMPRISING DISPERSING FINELY DIVIDED SOLID LITHIUM METAL IN FINELY DIVIDED SOLID LITHIUM NITRIDE TO PROVIDE A SUBSTANTIALLY HOMOGENEOUS MIXTURE OF THE SOLID LITHIUM METAL AND THE SOLID LITHIUM NITRIDE, HEATING THE SO-FORMED MIXTURE IN AN ATMOSPHERE OF NITROGEN TO ABOUT 400*C. TO CONVERT THE LITHIUM METAL PRESENT TO LITHIUM NITRIDE, THEN COOLING AND RECOVERING THE LITHIUM NITRIDE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |