US2713030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling mud addition agent
Assignee: Masonite Corp
•
Filing: 1952-05-17
•
Granted: 1955-07-12
•
Expires: 1972-05-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Brink
- 👤 Harold O Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206; C09K8/03; C09K8/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A DRILLING MUD ADDITION AGENT CONSISTING ESSENTIALLY OF FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF AN ALKALI METAL MOLECULARLY DEHYDRATED PHOSPHATE AND FROM ABOUT 90% TO ABOUT 50% BY WEIGHT OF AN OLIGOSSACCHARIDE MIXTURE COMPOSED OF ARABINOSE, MANNOSE, GALACTOSE, GLUCOSE, AND XYLOSE SUGAR UNITS, SAID OLIGOSACCHARIDE MIXTURE CONSISTING OF THE WATER-SOLUBLE PORTION OF LIGNOCELLULOSE MATERIAL WHICH HAS BEEN SUBJECTED TO THERMAL HYDROLYSIS AND WHICH CONSIST PRIMARILY OF PENTOSANS AND HEXOSANS.
Claim 2
Dependent Claim
72 words
A DRILLING MUD ADDITION AGENT CONSISTING ESSENTIALLY OF FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF AN ALKALI METAL MOLECULARLY DEHYDRATED PHOSPHATE AND FROM ABOUT 90% TO ABOUT 50% BY WEIGHT OF AN OLIGOSSACCHARIDE MIXTURE COMPOSED OF ARABINOSE, MANNOSE, GALACTOSE, GLUCOSE, AND XYLOSE SUGAR UNITS, SAID OLIGOSACCHARIDE MIXTURE CONSISTING OF THE WATER-SOLUBLE PORTION OF LIGNOCELLULOSE MATERIAL WHICH HAS BEEN SUBJECTED TO THERMAL HYDROLYSIS AND WHICH CONSIST PRIMARILY OF PENTOSANS AND HEXOSANS.
References Cited (Backward Citations)
US2207348A
Cited
US2212108A
Cited
US2364434A
Cited
US2337296A
Cited
US2360327A
Cited
US2518439A
Cited
US2491436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |