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Patent US2732343A successfully refreshed from Google Patents.
US2732343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Milling fluid
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
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Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:27
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A DRILLING FLUID COMPRISING SALT WATER CONTAINING AT LEAST 50,000 P. P. M. OF SALT AND HAVING DISPERSED THEREIN CHRYSOTILE ASBESTOS OF GRADE DESIGNATION IN THE RANGE INCLUSIVE OF NO. 1 TO NO. 6 (STANDARD CANADIAN CHRYSOLTILE ASBESTOS CLASSIFICATION), SAID ASBESTOS BEING OF A FINENESS SUCH THAT IT WILL PASS 100 MESH AND BEING PRESENT IN AMOUNT TO SUBSTANTIALLY INCREASE VICOSITY, AND AN AMOUNT OF ORGANIC COLLOID EFFECTIVE TO INHIBIT SEPARATION OF THE DISPERSION.
Claim 2
Dependent Claim
74 words
A DRILLING FLUID COMPRISING SALT WATER CONTAINING AT LEAST 50,000 P. P. M. OF SALT AND HAVING DISPERSED THEREIN CHRYSOTILE ASBESTOS OF GRADE DESIGNATION IN THE RANGE INCLUSIVE OF NO. 1 TO NO. 6 (STANDARD CANADIAN CHRYSOLTILE ASBESTOS CLASSIFICATION), SAID ASBESTOS BEING OF A FINENESS SUCH THAT IT WILL PASS 100 MESH AND BEING PRESENT IN AMOUNT TO SUBSTANTIALLY INCREASE VICOSITY, AND AN AMOUNT OF ORGANIC COLLOID EFFECTIVE TO INHIBIT SEPARATION OF THE DISPERSION.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |