US3273957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of retarding water surface evaporation
Assignee: Standard Oil Co
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Filing: 1962-06-28
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Granted: 1966-09-20
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Beredjick Nicky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:35
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN THE METHOD FOR RETARDING THE EVAPORATION OF WATER FROM AN EVAPORATING SURFACE THEREOF WHICH COMPRISES FORMING AND MAINTAINING AN EVAPORATION RETARDANT FILM OF A WATER-INSOLUBLE C12-24 ALIPHATIC ALCOHOL ON SAID EVAPORATING SURFACE, THE IMPROVEMENT CONSISTING OF FORMING SAID FILM BY APPLYING TO SAID EVAPORATING SURFACE A LIQUID SOLUTION CONSISTING OF ABOUT 0.01-2 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION OF SAID C12-24 ALIPHATIC ALCOHOL DISSOLVED IN A C1-5 ALKANOL.
Claim 2
Dependent Claim
70 words
IN THE METHOD FOR RETARDING THE EVAPORATION OF WATER FROM AN EVAPORATING SURFACE THEREOF WHICH COMPRISES FORMING AND MAINTAINING AN EVAPORATION RETARDANT FILM OF A WATER-INSOLUBLE C12-24 ALIPHATIC ALCOHOL ON SAID EVAPORATING SURFACE, THE IMPROVEMENT CONSISTING OF FORMING SAID FILM BY APPLYING TO SAID EVAPORATING SURFACE A LIQUID SOLUTION CONSISTING OF ABOUT 0.01-2 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION OF SAID C12-24 ALIPHATIC ALCOHOL DISSOLVED IN A C1-5 ALKANOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |