Patent US3199944A successfully refreshed from Google Patents.
US3199944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective film to prevent evaporation
Assignee: Standard Oil Co
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Filing: 1962-09-10
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Granted: 1965-08-10
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Gabor Joseph
- 👤 Jr Herman E Ries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A METHOD FOR RETARDING EVAPORATION OF WATER WHICH METHOD COMPRISES APPLYING TO AN AQUEOUS SURFACE CAPABLE OF EVAPORATION AN ESTER OF A FATTY ALCOHOL HAVING THE FORMULA:
Claim 2
Independent Claim
27 words
A METHOD FOR RETARDING EVAPORATION OF WATER WHICH METHOD COMPRISES APPLYING TO AN AQUEOUS SURFACE CAPABLE OF EVAPORATION AN ESTER OF A FATTY ALCOHOL HAVING THE FORMULA:
References Cited (Backward Citations)
US3036880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |