Patent US3390073A successfully refreshed from Google Patents.
US3390073A
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Hydrocarbon additive for heatexchanger anti-fouling
Assignee: Baker Petrolite LLC
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Filing: 1967-09-05
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Granted: 1968-06-25
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Expires: 1987-09-05
Abstract
No abstract record available.
Inventors
- 👤 Richard L Godar
- 👤 James L Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:51
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/223; C10L1/228; C10L1/2283; C10L1/234; C10L1/236; C10L1/2368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2839512A
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US2915567A
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US3001975A
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US3062744A
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US3034876A
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US3190835A
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US3224957A
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US3201350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |