US3489619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer and quench oil
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1968-09-24
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Granted: 1970-01-13
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Expires: 1988-09-24
Abstract
No abstract record available.
Inventors
- 👤 Phillip W Brewster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:04
CPC Classifications
B; B01; B01D; B01D51/00; B01D51/10; C; C09; C09K; C09K5/00; C09K5/08; C09K5/10; C10; C10M; C10M1/00; C10M1/08; C21; C21D; C21D1/00; C21D1/56; C21D1/58; C10M2201/00; C10M2201/02; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/085; C10M2201/087; C10M2201/10; C10M2201/102; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |