US2426128A
Expired / Lapsed
US
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Plastic compositions made with trimethylolnitromethane
Assignee: Hercules Powder Co
•
Filing: 1940-12-18
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Granted: 1947-08-19
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Expires: 1960-12-18
Abstract
No abstract record available.
Inventors
- 👤 William W Trowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:24
CPC Classifications
C; C09; C09D; C09D189/00; C09D189/005; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08K5/16; C08K5/32; C08L; C08L61/00; C08L61/04; C08L61/06; C08L93/00; C08L97/00; C08L97/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949
Claims Analysis
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |