Patent US2982638A successfully refreshed from Google Patents.
US2982638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrocellulose propellants containing lead salts of aliphatic acids
Assignee: Olin Corp
•
Filing: 1956-10-12
•
Granted: 1961-05-02
•
Expires: 1976-10-12
Abstract
No abstract record available.
Inventors
- 👤 Robert A Cooley
- 👤 Herman A Bruson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:53
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A SMOKELESS POWDER GRAIN CONSISTING ESSENTIALLY OF GELATINIZED NITROCELLULOSE AND BETWEEN ABOUT 0.5 PERCENT AND ABOUT 5 PERCENT OF A LEAD SALT OF AN ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF KETO ALIPHATIC ACIDS, ALKOXY ALIPHATIC ACIDS, ACYLAMINO ALIPHATIC ACIDS, AND DIALKYLAMINO ALIPHATIC ACIDS, SAID LEAD SALT HAVING MORE THAN 6 CARBON ATOMS AND BEING SUBSTANTIALLY UNIFORMLY DISPERSED THROUGHOUT THE GRAIN.
Claim 2
Dependent Claim
62 words
A SMOKELESS POWDER GRAIN CONSISTING ESSENTIALLY OF GELATINIZED NITROCELLULOSE AND BETWEEN ABOUT 0.5 PERCENT AND ABOUT 5 PERCENT OF A LEAD SALT OF AN ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF KETO ALIPHATIC ACIDS, ALKOXY ALIPHATIC ACIDS, ACYLAMINO ALIPHATIC ACIDS, AND DIALKYLAMINO ALIPHATIC ACIDS, SAID LEAD SALT HAVING MORE THAN 6 CARBON ATOMS AND BEING SUBSTANTIALLY UNIFORMLY DISPERSED THROUGHOUT THE GRAIN.
References Cited (Backward Citations)
CA485662A
Cited
US2498388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |