US2428843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant cellulosic material and process for producing same
Assignee: Individual
•
Filing: 1945-08-28
•
Granted: 1947-10-14
•
Expires: 1965-08-28
Abstract
No abstract record available.
Inventors
- 👤 Louis W Georges
- 👤 Hamalainen Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:51
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/395; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2713
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2370405A
Cited
GB474403A
Cited
GB488783A
Cited
US2225661A
Cited
GB461179A
Cited
US2303364A
Cited
US2343920A
Cited
US2350188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |