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US2755291A
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US
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Certain quaternary ammonium azides
Assignee: Nepera Chemical Co Inc
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Filing: 1954-10-07
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Granted: 1956-07-17
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Expires: 1974-10-07
Abstract
No abstract record available.
Inventors
- 👤 Robert H Broh-Kahn
- 👤 Theodore I Fand
- 👤 Leon E Tenenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
C; C07; C07C; C07C247/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
AZIDES OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
5 words
AZIDES OF THE FOLLOWING FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |