US2923612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-producing compositions
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1956-11-15
•
Granted: 1960-02-02
•
Expires: 1976-11-15
Abstract
No abstract record available.
Inventors
- 👤 Harrison Kenneth
- 👤 Cooke Edward Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:06
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06; C06B; C06B23/00; C06B23/007; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/111
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A GAS GENERATING COMPOSITION CONSISTING ESSENTIALLY OF GUANIDINE NITRATE, AMMONIUM NITRATE, A WATER SOLUBLE SALT OF CHROMIC ACID, AND FROM 0.1 TO 4% BY DRY WEIGHT OF THE TOTAL COMPOSITION OF WATER INSOLUBLE CUPRIC SALT OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF CUPRIC OXALATE, 2CUC2O4H2O, CUPRIC CITRATE,
Claim 2
Dependent Claim
50 words
A GAS GENERATING COMPOSITION CONSISTING ESSENTIALLY OF GUANIDINE NITRATE, AMMONIUM NITRATE, A WATER SOLUBLE SALT OF CHROMIC ACID, AND FROM 0.1 TO 4% BY DRY WEIGHT OF THE TOTAL COMPOSITION OF WATER INSOLUBLE CUPRIC SALT OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF CUPRIC OXALATE, 2CUC2O4H2O, CUPRIC CITRATE,
References Cited (Backward Citations)
US2434872A
Cited
US2637274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |