Patent US3245915A successfully refreshed from Google Patents.
US3245915A
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Composition and method of inhibiting corrosion of metal surfaces in contact with aqueous surface active solutions
Assignee: Union Oil Company of California
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Filing: 1962-12-17
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Granted: 1966-04-12
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Rai Charanjit
- 👤 Robert C Kimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:50
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/28; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ORGANIC SURFACENT, SALTS FROM THE GROUP CONSISTING OF SODIUM PYROPHOSPHATE AND SODIUM TRIPOLYPHOSPHATE, IN AMOUNT SUFFICIENT TO CAUSE CORROSION OF A METAL SURFACE WHEN SAID COMPOSITION IN AQUEOUS MEDIUM IS CONTACTED WITH SAID METAL OF INNER COMPLEXES HAVING THE FORMULA SION OF SAID METAL OF INNER COMPLEXES HAVING THE FORMULA
Claim 2
Dependent Claim
58 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ORGANIC SURFACENT, SALTS FROM THE GROUP CONSISTING OF SODIUM PYROPHOSPHATE AND SODIUM TRIPOLYPHOSPHATE, IN AMOUNT SUFFICIENT TO CAUSE CORROSION OF A METAL SURFACE WHEN SAID COMPOSITION IN AQUEOUS MEDIUM IS CONTACTED WITH SAID METAL OF INNER COMPLEXES HAVING THE FORMULA SION OF SAID METAL OF INNER COMPLEXES HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |