Patent US2421026A successfully refreshed from Google Patents.
Patent US2307744A successfully refreshed from Google Patents.
US2307744A
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Petroleum hydrocarbon emulsions
Assignee: L SONNEBORN SONS Inc
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Filing: 1941-05-17
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Granted: 1943-01-12
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Expires: 1961-05-17
Abstract
No abstract record available.
Inventors
- 👤 Liberthson Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:25
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/017; C10; C10M; C10M173/00; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/20; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2040/00; C10N2040/20; C10N2040/22; C10N2040/46; C10N2050/00; C10N2050/01; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
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) | 1946-01-11 | 1946-07-13 | 1947-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-11 | 1950-07-13 | 1951-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-11 | 1954-07-13 | 1955-01-12 | $7700.00 | Window Closed / Lapsed |