US3801502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterflood bacterial viscosifier
Assignee: Phillips Petroleum Co
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Filing: 1971-09-23
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Granted: 1974-04-02
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Expires: 1991-09-23
Abstract
Abstract A METHOD OF TREATING FERMENTATION PRODUCTS PRODUCED BY THE FERMENTATION EMPLOYING THE GENUS XANTHOMONAS WITH ALCOHOLS, KETONES, PHENOLS, AND NONIONIC SURFACTANTS TO PRODUCE SUBSTANCES INCORPORABLE IN WATER USED IN WATERFLOODING TO ADJUST THE VISCOSITY THEREOF.
Inventors
- 👤 D Hitzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; C09K8/58; C09K8/588; Y; Y10; Y10S; Y10S507/00; Y10S507/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |