US3528147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing non-woven fabrics
Assignee: Montedison SpA
•
Filing: 1968-04-08
•
Granted: 1970-09-15
•
Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 Aldo Fior Goteborg
- 👤 Mauro Navone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
D; D04; D04H; D04H13/00; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/498; D04H1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2825958A
Cited
US3235935A
Cited
US3216082A
Cited
US3317335A
Cited
GB1080222A
Cited
US3377231A
Cited
US3272898A
Cited
US3407461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |