US3428667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N,n-dinitramines of certain organic compounds and process
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1962-09-20
•
Granted: 1969-02-18
•
Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Edward E Hamel
- 👤 Robert E Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:36
CPC Classifications
C; C06; C06B; C06B43/00; C06B25/00; C06B25/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 3
Independent Claim
8 words
THE METHOD OF PREPARING COMPOUNDS OF THE FORMULA
Claim 4
Independent Claim
8 words
THE METHOD OF PREPARING COMPOUNDS OF THE 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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |