Patent US2782162A successfully refreshed from Google Patents.
US2782162A
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Method of treating sea water
Assignee: Hagan Corp
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Filing: 1952-07-07
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Granted: 1957-02-19
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Expires: 1972-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert W Liddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:00
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/105; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD OF TREATING SEA WATER WHEREBY IT IS RENDERED LASS SCALE-FORMING WHEN HEATED WHICH COMPRISES ADDING THERETO AN EFFECTIVE AMOUNT UP TO 50 PARTS PER MILLION OF A WATER-SOLUBLE MOLECULARLY DEHYDRATED PHOSPHATE OF THE GROUP CONSISTING OF THE ALKALI METALS AND AMMONIUM HAVING AMOLAR RATIO OF GROUP MEMBER OXIDE TO PHOSPHORUS PENTOXIDE FROM ABOUT 0.4:1 TO ABOUT 2.0:1, AND A WATER SOLUBLE SALT OF LIGNIN SULFONIC ACID.
Claim 2
Independent Claim
68 words
A METHOD OF TREATING SEA WATER WHEREBY IT IS RENDERED LASS SCALE-FORMING WHEN HEATED WHICH COMPRISES ADDING THERETO AN EFFECTIVE AMOUNT UP TO 50 PARTS PER MILLION OF A WATER-SOLUBLE MOLECULARLY DEHYDRATED PHOSPHATE OF THE GROUP CONSISTING OF THE ALKALI METALS AND AMMONIUM HAVING AMOLAR RATIO OF GROUP MEMBER OXIDE TO PHOSPHORUS PENTOXIDE FROM ABOUT 0.4:1 TO ABOUT 2.0:1, AND A WATER SOLUBLE SALT OF LIGNIN SULFONIC ACID.
References Cited (Backward Citations)
FR619040A
Cited
US2374100A
Cited
DE717078C
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US2248656A
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US2358222A
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US2318663A
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US2391895A
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US2453352A
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US2505457A
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US2575298A
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US2576386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |