US3028274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion method for manufacturing smokeless powder
Assignee: Hercules Powder Co
•
Filing: 1948-07-15
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Granted: 1962-04-03
•
Expires: 1968-07-15
Abstract
No abstract record available.
Inventors
- 👤 Winer Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:48
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0075; C06B25/00; C06B25/18; C06B25/24; C06B25/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN THE MANUFACTURE OF GAS-PRODUCING CHARGES, THE METHOD WHICH COMPRISES UNIFORMLY COMBINING COMBUSTIBLE PROPELLANT COMPOSITION COMPRISING NITROCELLULOSE WITH SUBSTANTIALLY NONVOLATILE PLASTICIZER FOR NITROCELLULOSE IN A MOLD, CURING THE CONTENTS OF THE MOLD AT SUBSTANTIALLY ATMOSPHERIC PRESSURE UNTIL A SOLID MASS IS OBTAINED, AND EXTRUDING THE MASS TO FORM GRAINS OF SMALLER DIAMETER THAN THE MASS.
Claim 2
Dependent Claim
55 words
IN THE MANUFACTURE OF GAS-PRODUCING CHARGES, THE METHOD WHICH COMPRISES UNIFORMLY COMBINING COMBUSTIBLE PROPELLANT COMPOSITION COMPRISING NITROCELLULOSE WITH SUBSTANTIALLY NONVOLATILE PLASTICIZER FOR NITROCELLULOSE IN A MOLD, CURING THE CONTENTS OF THE MOLD AT SUBSTANTIALLY ATMOSPHERIC PRESSURE UNTIL A SOLID MASS IS OBTAINED, AND EXTRUDING THE MASS TO FORM GRAINS OF SMALLER DIAMETER THAN THE MASS.
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |