Patent US3018245A successfully refreshed from Google Patents.
US3018245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of starches and gums, and compositions thereof
Assignee: Individual
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Filing: 1959-05-27
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Granted: 1962-01-23
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Expires: 1979-05-27
Abstract
No abstract record available.
Inventors
- 👤 William L Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:25
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206; C08; C08B; C08B31/00; C08B37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN AQUEOUS DRILLING FLUID COMPRISING WATER AS CONTINUOUS PHASE AND FROM ABOUT 1 TO ABOUT 25 LBS. PER BARREL THEREOF OF A COMMINUTED MATERIAL CHOSEN FROM THE CLASS CONSISTING OF WATER DISPERSIBLE STARCHES AND WATER DISPERSIBLE GUMS INTIMATELY COATED WITH A CHLORINATED HYDROXYDIPHENYL HAVING THE FORMULA C12H9OCI(CH2)N, WHERE N IS A DIGIT FROM 0 TO 2 INCLUSIVE, INCORPORATED THEREIN.
Claim 2
Dependent Claim
59 words
AN AQUEOUS DRILLING FLUID COMPRISING WATER AS CONTINUOUS PHASE AND FROM ABOUT 1 TO ABOUT 25 LBS. PER BARREL THEREOF OF A COMMINUTED MATERIAL CHOSEN FROM THE CLASS CONSISTING OF WATER DISPERSIBLE STARCHES AND WATER DISPERSIBLE GUMS INTIMATELY COATED WITH A CHLORINATED HYDROXYDIPHENYL HAVING THE FORMULA C12H9OCI(CH2)N, WHERE N IS A DIGIT FROM 0 TO 2 INCLUSIVE, INCORPORATED THEREIN.
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |