Patent US2892869A successfully refreshed from Google Patents.
US2892869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing compounds of boron and nitrogen
Assignee: Wyeth Holdings LLC
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Filing: 1957-03-25
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Granted: 1959-06-30
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Groszos
- 👤 Stanley F Stafiej
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:58
CPC Classifications
C; C07; C07F; C07F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A METHOD OF PRODUCING BORAZOLES REPRESENTED BY THE GENERAL FORMULA
Claim 2
Independent Claim
10 words
A METHOD OF PRODUCING BORAZOLES REPRESENTED BY THE GENERAL 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) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |