Patent US3483133A successfully refreshed from Google Patents.
US3483133A
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US
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Method of inhibiting corrosion with aminomethylphosphonic acid compositions
Assignee: Calgon Corp
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Filing: 1967-08-25
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Granted: 1969-12-09
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Expires: 1987-08-25
Abstract
No abstract record available.
Inventors
- 👤 George B Hatch
- 👤 Paul H Ralston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C23F11/1676; C23F11/18; C23F11/182; C23F11/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2337856A
Cited
US2742369A
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US3022133A
Cited
US3316331A
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US3336221A
Cited
US3346488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |