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Patent US3547986A successfully refreshed from Google Patents.
US3547986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salt compositions for modifying cellulose materials
Assignee: Individual
•
Filing: 1965-11-30
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Granted: 1970-12-15
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Expires: 1985-11-30
Abstract
No abstract record available.
Inventors
- 👤 Luigi Falcone
- 👤 Agostino Parisi
- 👤 Mariola Sartoris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:01
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/427; D06M13/00; D06M13/322; D06M13/325; D06M13/342
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |