US3247124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method of inhibiting corrosion of copper-containing metals
Assignee: Union Oil Company of California
•
Filing: 1962-07-11
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Granted: 1966-04-19
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Expires: 1982-07-11
Abstract
No abstract record available.
Inventors
- 👤 Robert C Kimble
- 👤 John B Braunwarth
- 👤 Louis A Joo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:29
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/124
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A DETERGENT COMPOSITION ESSENTIALLY OF AN ALKARYL SODIUM SULFONATE, EFFECTIVE AMOUNTS OF ALKALIMETAL POLYPHOSPHATE BUILDERS TO PREVENT THE FORMATION OF INSOLUBLE SOAPS BY METATHESIS IN THE SOLUTIONS IN WHICH SAID COMPOSITION IS USED AND ABOUT 1-20% BY WEIGHT OF SAID COMPOSITION OF NAPHTHENIC ACIDS CHARACTERIZED AS HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 297 AND AN ACID NUMBER NOT GREATER THAN ABOUT 178.
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |