Patent US1008683A successfully refreshed from Google Patents.
Patent US3020261A successfully refreshed from Google Patents.
US3020261A
Expired / Lapsed
US
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Polynitro urethanes
Assignee: Aerojet Rocketdyne Inc
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Filing: 1954-08-09
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Granted: 1962-02-06
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:07
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/384; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
AS NEW COMPOSITION OF MATTER, THE POLYNITRO URETHANES HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
AS NEW COMPOSITION OF MATTER, THE POLYNITRO URETHANES HAVING 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) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |