US3832301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric solvent compounds for changing the salt concentration of water
Assignee: Standard Oil Co
•
Filing: 1972-09-22
•
Granted: 1974-08-27
•
Expires: 1992-09-22
Abstract
Abstract NOVEL POLYMERIC SOLVENT COMPOUNDS AND THEIR USE FORCHANGING THE SALT CONCENTRATION OF WATER ARE HEREIN DESCRIBED.
Inventors
- 👤 L Lazare
- 👤 S Jakabhazy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:18
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/26; C02F1/265; C08; C08G; C08G65/00; C08G65/02; C08G65/04
Claims Analysis
Total Claims: 0
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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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |