US3497457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized organic halogen precursors for polyurethane foams
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1967-01-25
•
Granted: 1970-02-24
•
Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 Ronald James Hurlock
- 👤 Raymond Joseph Marklow
- 👤 Robert Leslie Mcginty
- 👤 Raymond Price
- 👤 John Francis Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:41
CPC Classifications
D; D04; D04H; D04H13/00; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; D04H11/00; D04H11/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2669507A
Cited
US3006870A
Cited
US3201358A
Cited
US3290376A
Cited
DE1191565B
Cited
US3378497A
Cited
US3355482A
Cited
US3409587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |