Patent US3067261A successfully refreshed from Google Patents.
US3067261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
The preparation of polynitro deriva-
Assignee: —
•
Filing: —
•
Granted: 1962-12-04
•
Expires: 1979-12-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:33
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/01; C07C205/02; C07C201/00; C07C201/06; C07C201/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
THE METHOD OF PREPARING POLYNITRO DERIVATIVES OF METHANE COMPRISING REACTING AN UNSUBSTITUTED AMIDE OF MALONIC ACID WITH CONCENTRATED NITRIC ACID AT 50-90*C. FOR 1-5 HOURS.
Claim 2
Independent Claim
25 words
THE METHOD OF PREPARING POLYNITRO DERIVATIVES OF METHANE COMPRISING REACTING AN UNSUBSTITUTED AMIDE OF MALONIC ACID WITH CONCENTRATED NITRIC ACID AT 50-90*C. FOR 1-5 HOURS.
References Cited (Backward Citations)
US2057076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |