Patent US3856590A successfully refreshed from Google Patents.
US3856590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellants and method of producing the same
Assignee: DIRECTOR OFFICE OF SCIENT RES
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Filing: 1945-04-18
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Granted: 1974-12-24
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Expires: 1965-04-18
Abstract
Abstract 1. A new article of manufacture, a propellant comprising about 21.0 percent nitrocellulose, about 13.0 percent nitroglycerine, about 55.4 percent potassium perchlorate of an average particle diameter of 7.5 + OR - 0.5 mu, about 9.0 percent carbon black, about 1.0 percent centralite No. 1, 0.3 percent magnesium oxide and 0.3 percent magnesium stearate, the nitrocellulose and nitroglycerine being colloided and intimately mixed with the other ingredients to form a matrix in which the particles of potassium perchlorate and carbon black are distributed.
Inventors
- 👤 J Kincaid
- 👤 L Hammett
- 👤 B Dailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:38
CPC Classifications
C; C06; C06B; C06B29/00; C06B29/02; C06B29/16; C06B21/00; C06B21/0008; C06B25/00; C06B25/18; C06B25/24; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A NEW ARTICLE OF MANUFACTURE, A PROPELLANT COMPRISING ABOUT 21.0 PERCENT NITROCELLULOSE, ABOUT 13.0 PERCENT NITROGLYCERINE, ABOUT 55.0 PERCENT POTASSIUM PERCHLORATE OF AN AVERAGE PARTICLE DIAMETER OF 7.5 $ 0.5 MU, ABOUT 9.0 PERCENT CARBON BLACK, ABOUT 1.0 PERCENT CENTRLITE NO. 1,0.3 PERCENT MAGNESIUM OXIDE AND 0.3 PERCENT MAGNESIUM STEARATE, THE NITROCELLULOSE AND NITROGLYCERINE BEING COLLOIDED AND INTIMATELY MIXED WITH THE OTHER INGREDIENTS TO FORM A MATRIX IN WHICH THE PARTICLES OF POTASSIUM PERCHLORATE AND CARBON BLACK ARE DISTRIBUTED.
Claim 2
Dependent Claim
79 words
A NEW ARTICLE OF MANUFACTURE, A PROPELLANT COMPRISING ABOUT 21.0 PERCENT NITROCELLULOSE, ABOUT 13.0 PERCENT NITROGLYCERINE, ABOUT 55.0 PERCENT POTASSIUM PERCHLORATE OF AN AVERAGE PARTICLE DIAMETER OF 7.5 $ 0.5 MU, ABOUT 9.0 PERCENT CARBON BLACK, ABOUT 1.0 PERCENT CENTRLITE NO. 1,0.3 PERCENT MAGNESIUM OXIDE AND 0.3 PERCENT MAGNESIUM STEARATE, THE NITROCELLULOSE AND NITROGLYCERINE BEING COLLOIDED AND INTIMATELY MIXED WITH THE OTHER INGREDIENTS TO FORM A MATRIX IN WHICH THE PARTICLES OF POTASSIUM PERCHLORATE AND CARBON BLACK ARE DISTRIBUTED.
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |