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US2087597A
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Method for inhibiting gum formation in low boiling hydrocarbon oils and products obtained thereby
Assignee: Standard Oil Development Co
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Filing: 1930-11-21
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Granted: 1937-07-20
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Expires: 1950-11-21
Abstract
No abstract record available.
Inventors
- 👤 Carlos L Gutzeit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:53
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/003; C10L1/10; C10L1/14; C10L1/22; C10L1/226; C10L1/228; C10L1/2283; C10L1/232; C10L1/233; C10L1/24; C10L1/2406; C10L1/2412; C10L1/2443; C10L1/2456
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) | 1940-07-19 | 1941-01-18 | 1941-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-19 | 1945-01-18 | 1945-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-19 | 1949-01-18 | 1949-07-20 | $7700.00 | Window Closed / Lapsed |