US3401007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cleaning natural and synthetic fibrous materials
Assignee: Rewo Chemische Fabrik GmbH
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Filing: 1965-01-22
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Granted: 1968-09-10
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Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Hoffmann Helmut
- 👤 Melloh Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/123; C11D3/00; C11D3/0005; C11D3/0031
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |