US3402227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of nonwoven webs
Assignee: EIDP Inc
•
Filing: 1965-01-25
•
Granted: 1968-09-17
•
Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Terence E C Knee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:31
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; D04H3/02; D04H3/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2993239A
Cited
GB932482A
Cited
US3338992A
Cited
US3296678A
Cited
US3302237A
Cited
US3334161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |