Patent US2903330A successfully refreshed from Google Patents.
US2903330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for retarding evaporation of water from large bodies of water
Assignee: Individual
•
Filing: 1958-06-30
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Granted: 1959-09-08
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Russell G Dressler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A METHOD OF RETARDING NORMAL EVAPORATION FROM A BODY OF OPEN WATER HAVING AN EXTENTED SURFACE NOR MALLY IN CONTACT WITH THE OPEN AIR BY THE FORMATION OF A MONOMOLECULAR FILM OF A FATTY ALCOHOL CONTAINING 12 TO 24 CARBON ATOMS ON SUCH SURFACE, THE STEP WHICH COMPRISES APPLYING SUCH FATTY ALCOHOL TO SAID BODY OF WATER IN THE FORM OF AN AQUEOUS DISPERSION OF FATTY ALCOHOL IN FINELY DIVIDED FORM, THE PARTICLE SIZE OF WHICH IS SUCH THAT ESSENTIALLY THE MAXIUM DIMENSION OF THE FATTY ALCOHOL PARTICLES IS UP TO 0.5 INCH AND THAT THE MAJOR PROPORTION OF THE FINELY DIVIDED FATTY ALCOHOL HAS A PARTICLE SIZE BELOW .05 INCH, TO FORM A MONOMOLECULAR FILM OF SUCH FATTY ALCOHOL UPON THE WATER SURFACE.
Claim 2
Dependent Claim
125 words
IN A METHOD OF RETARDING NORMAL EVAPORATION FROM A BODY OF OPEN WATER HAVING AN EXTENTED SURFACE NOR MALLY IN CONTACT WITH THE OPEN AIR BY THE FORMATION OF A MONOMOLECULAR FILM OF A FATTY ALCOHOL CONTAINING 12 TO 24 CARBON ATOMS ON SUCH SURFACE, THE STEP WHICH COMPRISES APPLYING SUCH FATTY ALCOHOL TO SAID BODY OF WATER IN THE FORM OF AN AQUEOUS DISPERSION OF FATTY ALCOHOL IN FINELY DIVIDED FORM, THE PARTICLE SIZE OF WHICH IS SUCH THAT ESSENTIALLY THE MAXIUM DIMENSION OF THE FATTY ALCOHOL PARTICLES IS UP TO 0.5 INCH AND THAT THE MAJOR PROPORTION OF THE FINELY DIVIDED FATTY ALCOHOL HAS A PARTICLE SIZE BELOW .05 INCH, TO FORM A MONOMOLECULAR FILM OF SUCH FATTY ALCOHOL UPON THE WATER SURFACE.
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |