Patent US3307619A successfully refreshed from Google Patents.
US3307619A
Expired / Lapsed
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Temperature control system for viscosimeter
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-12-04
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Granted: 1967-03-07
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Kim Dae Sik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:38
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/14; G01N11/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN COMBINATION WITH A VISCOSIMETER HAVING A ROTATABLE CONE IN FLUID CONTACT WITH A SAMPLE LIQUID UNDER TEST SUPPORTED UPON A FIXED METALLIC PLATE, THE IMPROVEMENT COMPRISING, MEANS FOR MAINTAINING SAID PLATE AT A SUBSTANTIALLY UNIFORM TEMPERATURE INDEPENDENT OF THE SPEED OF ROTATION OF SAID CONE AND INDEPENDENT OF CHANGES IN THE SURROUNDING AMBIENT TEMPERATURE, SAID TEMPERATURE MAINTENANCE MEANS COMPRISING A BLOCK OF RELATIVELY LOW-HEAT CONDUCTIVE MATERIAL HAVING A CAVITY THEREIN, SAID
Claim 2
Dependent Claim
72 words
IN COMBINATION WITH A VISCOSIMETER HAVING A ROTATABLE CONE IN FLUID CONTACT WITH A SAMPLE LIQUID UNDER TEST SUPPORTED UPON A FIXED METALLIC PLATE, THE IMPROVEMENT COMPRISING, MEANS FOR MAINTAINING SAID PLATE AT A SUBSTANTIALLY UNIFORM TEMPERATURE INDEPENDENT OF THE SPEED OF ROTATION OF SAID CONE AND INDEPENDENT OF CHANGES IN THE SURROUNDING AMBIENT TEMPERATURE, SAID TEMPERATURE MAINTENANCE MEANS COMPRISING A BLOCK OF RELATIVELY LOW-HEAT CONDUCTIVE MATERIAL HAVING A CAVITY THEREIN, SAID
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |