US3492230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing alkaline earth sulfonates of high alkalinity
Assignee: Standard Oil Co
•
Filing: 1966-05-27
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Granted: 1970-01-27
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Expires: 1986-05-27
Abstract
No abstract record available.
Inventors
- 👤 Roger W Watson
- 👤 Eugene E Richardson
- 👤 Albert R Sabol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C10M2219/00; C10M2219/04; C10M2219/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2779784A
Cited
US2888279A
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US3027325A
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US2856360A
Cited
US2856361A
Cited
US2856359A
Cited
US2881206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |