Patent US3457343A successfully refreshed from Google Patents.
US3457343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet spinning process
Assignee: ALGEMEINE KUNSTZIJDE UNIE NV
•
Filing: 1966-08-22
•
Granted: 1969-07-22
•
Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Otto E Van Lohuizen
- 👤 Pieter Paulusma
- 👤 Gaspard L F Van Kinschot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:42
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/10; H05B39/105; C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; D; D01; D01F; D01F6/00; D01F6/58; D01F6/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3086050A
Cited
US3110548A
Cited
US3219626A
Cited
US3221080A
Cited
US3306875A
Cited
US3342920A
Cited
US3337670A
Cited
US3257357A
Cited
US3342892A
Cited
US3373226A
Cited
US3375228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |