Patent US3055781A successfully refreshed from Google Patents.
US3055781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite propellants
Assignee: Individual
•
Filing: 1958-11-19
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Granted: 1962-09-25
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Expires: 1978-11-19
Abstract
No abstract record available.
Inventors
- 👤 Yamamoto Akira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:16
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A COMPOSITE PROPELLANT CONSISTING ESSENTIALLY OF A FUEL COMPONENT SELECTED FROM THE GROUP CONSISTING OF POLYOXYMETHYLENE DIACETATES, POLYOXYMETHYLENE DIMETHYL ETHERS, THE ADDITION REACTION PRODUCTS OF POLYOXYMETHYLENE GLYCOLS AND POLYISOCYANATES HAVING AT LEAST TWO ISOCYANATE GROUPS PER MOLECULE, THE ADDITION REACTION PRODUCTS OF PARAFORMALDEHYDE AND POLYISOCYANATES HAVING AT LEAST TWO ISOCYANATE GROUPS PER MOLECULE, AND MIXTURES THEREOF; AND AT LEAST ONE SOLID, INORGANIC OXIDIZING SALT AS AN OXIDIZING AGENT; SAID SELECTED FUEL COMPONENT BEING PRESENT IN AN AMOUNT EQUAL TO FROM 2 TO 60%, BY WEIGHT OF SAID COMPOSITE PROPELLENT AND SAID OXIDIZING AGENT BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 24%, BY WEIGHT, OF SAID COMPOSITE PROPELLANT.
Claim 2
Dependent Claim
109 words
A COMPOSITE PROPELLANT CONSISTING ESSENTIALLY OF A FUEL COMPONENT SELECTED FROM THE GROUP CONSISTING OF POLYOXYMETHYLENE DIACETATES, POLYOXYMETHYLENE DIMETHYL ETHERS, THE ADDITION REACTION PRODUCTS OF POLYOXYMETHYLENE GLYCOLS AND POLYISOCYANATES HAVING AT LEAST TWO ISOCYANATE GROUPS PER MOLECULE, THE ADDITION REACTION PRODUCTS OF PARAFORMALDEHYDE AND POLYISOCYANATES HAVING AT LEAST TWO ISOCYANATE GROUPS PER MOLECULE, AND MIXTURES THEREOF; AND AT LEAST ONE SOLID, INORGANIC OXIDIZING SALT AS AN OXIDIZING AGENT; SAID SELECTED FUEL COMPONENT BEING PRESENT IN AN AMOUNT EQUAL TO FROM 2 TO 60%, BY WEIGHT OF SAID COMPOSITE PROPELLENT AND SAID OXIDIZING AGENT BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 24%, BY WEIGHT, OF SAID COMPOSITE PROPELLANT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |