US3487018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scale and corrosion control in cooling waters
Assignee: ChampionX LLC
•
Filing: 1968-04-12
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Granted: 1969-12-30
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Expires: 1988-04-12
Abstract
No abstract record available.
Inventors
- 👤 Edwin S Troscinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:32
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; C02F5/145; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C23; C23F; C23F11/00; C23F11/08; C23F14/00; C23F14/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3341467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |