US2773286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming non-woven porous fibrous synthetic leather sheet
Assignee: EIDP Inc
•
Filing: 1952-07-29
•
Granted: 1956-12-11
•
Expires: 1972-07-29
Abstract
No abstract record available.
Inventors
- 👤 Piccard John Augustus
- 👤 Graham Boynton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0043; D06N3/0052; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; Y; Y10; Y10S; Y10S424/00; Y10S424/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2006687A
Cited
US2140063A
Cited
GB573966A
Cited
US2378630A
Cited
GB583825A
Cited
US2474201A
Cited
US2517753A
Cited
US2568866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |