US3687610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for inhibiting corrosion of metallic surfaces with cooling water containing phenol - aldehyde resins
Assignee: ChampionX LLC
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Filing: 1969-07-30
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Granted: 1972-08-29
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Expires: 1989-07-30
Abstract
Abstract WATER-SOLUBLE, PHENOL-ALDEHYDE COMPOSITIONS AS CORROSION INHIBITORS FOR INDUSTRIAL COOLING WATERS.
Inventors
- 👤 Ian T Gilson
- 👤 Edwin S Troscinski
- 👤 Thomas C Curtis
- 👤 Robert G Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:25
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/173
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |