Patent US3089847A successfully refreshed from Google Patents.
US3089847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting bacterial growth
Assignee: Hagan Chemicals and Controls Inc
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Filing: 1960-04-15
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Granted: 1963-05-14
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Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph N Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:08
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; Y; Y10; Y10S; Y10S507/00; Y10S507/92
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
THE PROCESS OF INHIBITING CORROSION OF OIL WELL CASINGS AND THE LIKE IN CONTACT WITH OIL FIELD BRINE WHICH CORROSION IS DUE TO SULFATE-REDUCING BACTERIA COMPRISING ADDING TO THE BRINE IN CONTACT WITH SAID OIL WELL CASINGS AND THE LIKE A SMALL AMOUNT OF A COMPOSITION PREPARED BY MIXING TETRAMETHYL AMMONIUM CHLORIDE AND A COMPOUND OF THE GENERAL FORMULA R3SNCI IN A MOLAR RATIO OF FROM ABOUT 1.5 TO 1 TO ABOUT 2.0 TO 1, AND HEATING THE MIXTURE FOR 1 TO 8 1/2 HOURS AT A TEMPERATURE FROM 100*C. TO 200*C., WHERE R IS AN ALKYL GROUP OF LESS THAN FOUR CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |