US2407180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying oil field waters
Assignee: ExxonMobil Oil Corp
•
Filing: 1943-10-30
•
Granted: 1946-09-03
•
Expires: 1963-10-30
Abstract
No abstract record available.
Inventors
- 👤 Schiller Harold
- 👤 Shapiro Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:28
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; C; C10; C10G; C10G33/00; C10G33/04; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/925
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) | 1949-09-02 | 1950-03-04 | 1950-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-09-02 | 1954-03-04 | 1954-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-09-02 | 1958-03-04 | 1958-09-03 | $7700.00 | Window Closed / Lapsed |