US3630938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromate and organophosphate compositions and methods for controlling scale and inhibiting corrosion
Assignee: ChampionX LLC
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Filing: 1969-09-29
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Granted: 1971-12-28
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Expires: 1989-09-29
Abstract
Abstract THIS INVENTION RELATES TO METHODS AND COMPOSITIONS USED TO INHIBIT SCALE FORMATION AND/OR THE FORMATION OF SOLID SCALE FORMING SALTS AND TO PREVENT CORROSION IN WATER OR BRINE COMPRISING ADDING TO SAID WATER OR BRINE SMALL AMOUNTS OF CERTAIN COMPOUNDS CONTAINING CHROMATES AND ORGANOPHOSPHATES.
Inventors
- 👤 Edwin S Troscinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:21
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; Y; Y10; Y10S; Y10S507/00; Y10S507/927
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |