US2990411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polynitro compounds
Assignee: Purdue Research Foundation
•
Filing: 1958-09-26
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Granted: 1961-06-27
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Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Feuer Henry
- 👤 Leston Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:52
CPC Classifications
C; C07; C07C; C07C317/00; C07C317/02; C07C317/04; C07C205/00; C07C205/44; C07C205/45; C07C205/49; C07C205/50; C07C205/51; C07C247/00; C07C255/00; C07C265/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
AS A NEW COMPOSITION OF MATTER, COMPOUNDS HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
11 words
AS A NEW COMPOSITION OF MATTER, COMPOUNDS HAVING THE STRUCTURAL 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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |