Patent US1989528A successfully refreshed from Google Patents.
US1989528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillate petroleum product and method of treating the same
Assignee: ExxonMobil Oil Corp
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Filing: 1930-06-26
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Granted: 1935-01-29
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Expires: 1950-06-26
Abstract
No abstract record available.
Inventors
- 👤 James B Rather
- 👤 Jr Leslie C Beard
- 👤 Orland M Reiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:50
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225
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) | 1938-01-28 | 1938-07-30 | 1939-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-28 | 1942-07-30 | 1943-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-28 | 1946-07-30 | 1947-01-29 | $7700.00 | Window Closed / Lapsed |