US2925318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of retarding water surface evaporation
Assignee: Phillips Petroleum Co
•
Filing: 1958-04-10
•
Granted: 1960-02-16
•
Expires: 1978-04-10
Abstract
No abstract record available.
Inventors
- 👤 Francis W Crawford
- 👤 Charles E Stoops
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:20
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/38; B01; B01J; B01J19/00; B01J19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A METHOD FOR RETARDING THE EVAPORATION OF WATER FROM A SURFACE THEREOF WHICH COMPRISES ADDING TO SAID SURFACE A SYNTHETIC LONG STRAIGHT-CHAIN PRIMARY ALCOHOL CONTAINING AN ODD NUMBER OF CARBON ATOMS.
Claim 2
Independent Claim
31 words
A METHOD FOR RETARDING THE EVAPORATION OF WATER FROM A SURFACE THEREOF WHICH COMPRISES ADDING TO SAID SURFACE A SYNTHETIC LONG STRAIGHT-CHAIN PRIMARY ALCOHOL CONTAINING AN ODD NUMBER OF CARBON ATOMS.
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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |