US3835041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for the purification of waste effluents
Assignee: Tasman Vaccine Laboratories Ltd
•
Filing: 1972-07-03
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Granted: 1974-09-10
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Expires: 1992-07-03
Abstract
Abstract A PROCESS IS DISCLOSED FOR REMOVING PROTEIN FROM WASTE EFFLUENTS CONTAINING SAME USING ION EXCHANGE METHODS THE ION EXCHANGE RESIN IS A CROSS LINKED REGENERATED CELLULOSE MATRIX MODIFIED BY THE INTRODUCTION OF GROUPS CAPABLE OF CATION EXCHANGE OR GROUPS CAPABLE OF ANION EXCHANGE.
Inventors
- 👤 R Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/001; B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/22; B01J47/00; B01J47/014; C; C02; C02F; C02F1/00; C02F1/42; C02F9/00; C02F1/001; C02F1/28; C02F1/283; C02F1/72; C02F1/76; C02F2103/00; C02F2103/22; Y; Y10; Y10S; Y10S530/00; Y10S530/859
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |