US3248277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the purification of aqueous dispersions of fibrous materials
Assignee: FMC Corp
•
Filing: 1962-07-03
•
Granted: 1966-04-26
•
Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:07
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24; D; D21; D21C; D21C5/00; D21C5/02; D21C5/025; D21C5/027; Y; Y02; Y02W; Y02W10/00; Y02W10/30; Y02W10/33; Y02W30/00; Y02W30/50; Y02W30/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245839A
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US1351092A
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US1396227A
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US1585092A
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US1958035A
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US1813988A
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US2018933A
Cited
US1993362A
Cited
US2116511A
Cited
GB530556A
Cited
US2576464A
Cited
US3056713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |