Patent US2369251A successfully refreshed from Google Patents.
Patent US3001242A successfully refreshed from Google Patents.
US3001242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous web manufacture
Assignee: Akzo Nobel UK PLC
•
Filing: 1956-05-03
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Granted: 1961-09-26
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Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert D Heffelfinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:48
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2618816A
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US2662250A
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US2850421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |