Patent US4293855A successfully refreshed from Google Patents.
Patent US3347786A successfully refreshed from Google Patents.
US3347786A
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Process for purifying water using reforming of metal hydroxide flocculation agent
Assignee: Individual
•
Filing: 1965-06-25
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Granted: 1967-10-17
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Expires: 1985-06-25
Abstract
No abstract record available.
Inventors
- 👤 Baer Erhardt
- 👤 Xylander Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/04; B01D17/047; C02F1/46; C02F1/461; C02F1/465; C02F1/5236; C02F1/5281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR PURIFYING WATER WHICH COMPRISES PROVIDING A METAL HYDROZIDE IN FLOCCULATED FORMIN SAID WATER THEREBY CAUSING A PORTION OF THE IMPURITIES CONTAINED IN SAID WATER TO SEPARATE THEREFROM, ADJUSTING THE PH VALUE OF THE WATER TO DISSOLVE SAID HYDROXIDE, REMOVING THE SEPARATED IMPURITIES FROM SAID WATER, READJUSTING THE PH VALUE OF SAID WATER TO REFORM SAID METAL HYDROXIDE FLOCCULATE THEREBY CAUSING AN ADDITIONAL PORTION OF THE REMAINING IMPURITIES OF SAID WATER TO SEPARATE THEREFROM, AND REMOVING SAID ADDITIONAL SEPARATED IMPURITIES FROM SAID WATER.
Claim 2
Dependent Claim
85 words
A PROCESS FOR PURIFYING WATER WHICH COMPRISES PROVIDING A METAL HYDROZIDE IN FLOCCULATED FORMIN SAID WATER THEREBY CAUSING A PORTION OF THE IMPURITIES CONTAINED IN SAID WATER TO SEPARATE THEREFROM, ADJUSTING THE PH VALUE OF THE WATER TO DISSOLVE SAID HYDROXIDE, REMOVING THE SEPARATED IMPURITIES FROM SAID WATER, READJUSTING THE PH VALUE OF SAID WATER TO REFORM SAID METAL HYDROXIDE FLOCCULATE THEREBY CAUSING AN ADDITIONAL PORTION OF THE REMAINING IMPURITIES OF SAID WATER TO SEPARATE THEREFROM, AND REMOVING SAID ADDITIONAL SEPARATED IMPURITIES FROM SAID WATER.
References Cited (Backward Citations)
US1069169A
Cited
US2128569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |