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US3531407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam compatible fire-extinguishing powders containing copper phthalocyanine or one of its derivatives
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-11-15
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Granted: 1970-09-29
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Expires: 1988-11-15
Abstract
No abstract record available.
Inventors
- 👤 David Arthur Phillips
- 👤 John Lewis Milliet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2767141A
Cited
US3257316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |