Patent US3467192A successfully refreshed from Google Patents.
US3467192A
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US
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Inhibition of adherent scale accumulations
Assignee: Schlumberger Technology Corp
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Filing: 1968-01-26
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Granted: 1969-09-16
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Expires: 1988-01-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Nolan
- 👤 Charles F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:45
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/528; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; Y; Y10; Y10S; Y10S507/00; Y10S507/927
Claims Analysis
Total Claims: 0
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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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |