US3235343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of scale or other entrained solids from fluid to be treated
Assignee: Phillips Petroleum Co
•
Filing: 1962-09-11
•
Granted: 1966-02-15
•
Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Riggins Lonnie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:05
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/10; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; B01J8/00; B01J8/02; B01J8/0207; B01J8/0214; B01J2219/00; B01J2219/00049; B01J2219/00245; B01J2219/00252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US434216A
Cited
US1434562A
Cited
US2304778A
Cited
CA468487A
Cited
CA602453A
Cited
US1360349A
Cited
US1438553A
Cited
US1603878A
Cited
US1842082A
Cited
US1818905A
Cited
US2650675A
Cited
US2634194A
Cited
CH303650A
Cited
US2905633A
Cited
US2969318A
Cited
US3006435A
Cited
US2997374A
Cited
US2996361A
Cited
US3051561A
Cited
US3100141A
Cited
DK67782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |