US3380947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of aqueous solutions of flocculating agents of the polyacrylic amide type having high molecular weight
Assignee: Chemolimpex Magyar Vegyiaru Kulkereskedelmi Vallalat
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Filing: 1965-12-21
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Granted: 1968-04-30
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Expires: 1985-12-21
Abstract
No abstract record available.
Inventors
- 👤 Galgoezi Bela
- 👤 Demeter Laszlo
- 👤 Zagyvai Istvan
- 👤 Soltesz Laszlo
- 👤 Sommer Laszlo
- 👤 Hercsel Marton
- 👤 Raab Lajos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:25
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C07; C07C; C07C51/00; C07C51/08; C08L; C08L33/00; C08L33/24; C08L33/26; C08L33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734915A
Cited
DE1155598B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |