US3238128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for treatment of liquids with lime
Assignee: Fuller Co
•
Filing: 1962-12-26
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Granted: 1966-03-01
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Hilding B Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/687; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/034
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD OF TREATING A LIQUID OF VARIABLE MINERAL CONTENT WITH LIME TO REDUCE ALKALINITY AND OBTAIN A TREATED LIQUID OF UNIFORM QUALITY, COMPRISING ADDING TO A PORTION OF UNTREATED LIQUID IN A FIRST ZONE A LARGER QUANTITY OF LIME THAN REQUIRED FOR THE PRECIPITATION OF THE BACARBONATES OF CALCIUM AND MAGNESIUM IN SAID PORTION OF UNTREATED LIQUID, SAID QUANTITY BEING SUFFICIENT TO MAINTAIN A RATIO BETWEEN THE CONDUCTANCE OF THE LIME TREATED LIQUID AND THE CONDUCTANCE OF THE UNTREATED LIQUID WHICH IS ABOUT 1.0, CONTINUOUSLY MEASURING THE CONDUCTANCE OF THE LIME TREATED LIQUID AND OF THE UNTREATED LIQUID AND CONTROLLING THE LIME FEED TO MAINTAIN SAID RATIO, MIXING WITH THE EXCESS LIME CONTAINING EFFLUENT OF SAID FIRST ZONE AN ADDITIONAL PORTION OF UNTREATED LIQUID IN A SECOND ZONE, SAID ADDITIONAL PORTION OF UNTREATED LIQUID BEING PROPORTIONED SO THAT THE EXCESS LIME IN SAID EFFLUENT IS SUFFICIENT TO PRECIPITATE AT LEAST THE BICARBONATES OF CALCIUM IN SAID ADDITIONAL PORTION, AND CLARIFYING THE EFFLUENT OF SAID SECOND ZONE.
Claim 2
Independent Claim
167 words
A METHOD OF TREATING A LIQUID OF VARIABLE MINERAL CONTENT WITH LIME TO REDUCE ALKALINITY AND OBTAIN A TREATED LIQUID OF UNIFORM QUALITY, COMPRISING ADDING TO A PORTION OF UNTREATED LIQUID IN A FIRST ZONE A LARGER QUANTITY OF LIME THAN REQUIRED FOR THE PRECIPITATION OF THE BACARBONATES OF CALCIUM AND MAGNESIUM IN SAID PORTION OF UNTREATED LIQUID, SAID QUANTITY BEING SUFFICIENT TO MAINTAIN A RATIO BETWEEN THE CONDUCTANCE OF THE LIME TREATED LIQUID AND THE CONDUCTANCE OF THE UNTREATED LIQUID WHICH IS ABOUT 1.0, CONTINUOUSLY MEASURING THE CONDUCTANCE OF THE LIME TREATED LIQUID AND OF THE UNTREATED LIQUID AND CONTROLLING THE LIME FEED TO MAINTAIN SAID RATIO, MIXING WITH THE EXCESS LIME CONTAINING EFFLUENT OF SAID FIRST ZONE AN ADDITIONAL PORTION OF UNTREATED LIQUID IN A SECOND ZONE, SAID ADDITIONAL PORTION OF UNTREATED LIQUID BEING PROPORTIONED SO THAT THE EXCESS LIME IN SAID EFFLUENT IS SUFFICIENT TO PRECIPITATE AT LEAST THE BICARBONATES OF CALCIUM IN SAID ADDITIONAL PORTION, AND CLARIFYING THE EFFLUENT OF SAID SECOND ZONE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |