Patent US3067686A successfully refreshed from Google Patents.
US3067686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Type of propellant grain
Assignee: Eastman Kodak Co
•
Filing: 1960-05-05
•
Granted: 1962-12-11
•
Expires: 1980-05-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 William D Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:34
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; F02K9/12; C; C06; C06B; C06B45/00; C06B45/12; F02K9/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A ROCKET PROPELLANT GRAIN COMPRISING ROLLED-UP LAYERS FORMING A TUBULAR MEMBER HAVING HIGH MECHANICAL STRENGTH, SAID ROLLED-UP LAYERS OF SAID TUBULAR MEMBER COMPRISING (A) AN OXIDIZING AGENT AND (B) A PLURALITY OF TURNS OF FIBROUS SHEET MATERIAL HAVING INTERSTICES THEREIN AND CONSISTING OF POLY-A-OLEFIN FIBERS, SAID OXIDIZING AGENT BEING SUBSTANTIALLY UNIFORMLY DISPOSED BETWEEN THE ADJACENT TURNS OF THE MATERIAL AND IN THE INTERSTICES THEREOF.
Claim 2
Dependent Claim
64 words
A ROCKET PROPELLANT GRAIN COMPRISING ROLLED-UP LAYERS FORMING A TUBULAR MEMBER HAVING HIGH MECHANICAL STRENGTH, SAID ROLLED-UP LAYERS OF SAID TUBULAR MEMBER COMPRISING (A) AN OXIDIZING AGENT AND (B) A PLURALITY OF TURNS OF FIBROUS SHEET MATERIAL HAVING INTERSTICES THEREIN AND CONSISTING OF POLY-A-OLEFIN FIBERS, SAID OXIDIZING AGENT BEING SUBSTANTIALLY UNIFORMLY DISPOSED BETWEEN THE ADJACENT TURNS OF THE MATERIAL AND IN THE INTERSTICES THEREOF.
References Cited (Backward Citations)
US2408252A
Cited
US2668132A
Cited
US2939275A
Cited
US2926613A
Cited
US3000308A
Cited
US2918005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |