US3536620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-extinguishing compositions comprising the reaction products of urea and a bicarbonate,carbonate or hydroxide of sodium or potassium
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1967-10-20
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Granted: 1970-10-27
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Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 James Derek Birchall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:09
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090592A
Cited
US1823882A
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US2212152A
Cited
US2980505A
Cited
US3090749A
Cited
GB1118215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |