US2424883A
Expired / Lapsed
US
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Paraformaldehyde modified reaction products of diisocyanates with linear polyester polyamide
Assignee: Imperial Chemical Industries Ltd
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Filing: 1942-11-20
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Granted: 1947-07-29
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Expires: 1962-11-20
Abstract
No abstract record available.
Inventors
- 👤 Habgood Bernard James
- 👤 Harper David Augustine
- 👤 Reynolds Reginald John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:44
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/84; C08G18/28; C08G18/40; C08G18/60; C08G18/606; Y; Y10; Y10S; Y10S528/00; Y10S528/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1725797A
Cited
US2241321A
Cited
US2177637A
Cited
US2282827A
Cited
US2333922A
Cited
US2333917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |