Patent US3013005A successfully refreshed from Google Patents.
US3013005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separation
Assignee: Millennium Petrochemicals Inc
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Filing: 1958-10-10
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Granted: 1961-12-12
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Expires: 1978-10-10
Abstract
No abstract record available.
Inventors
- 👤 Ragnar S Solvik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:31
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A METHOD OF CENTRIFUGALLY SEPARATING A FLUID FEED MATERIAL CONTAINING SUSPENDED SOLIDS, CHARACTERIZED BY THE USE OF A MULTIPLE DISCHARGE CENTRIFUGE EMBODYING A SEPARATORY ROTOR, THE IMPROVEMENT WHICH COMPRISES UTILIZING A TEMPERATURE ABOVE ABOUT 150*C. AND A PRESSURE ABOVE ABOUT 500 P.S.I. AND ENVELOPING SAID ROTOR WITH A GAS SELECTED FROM THE GROUP CONSISTING OF HELIUM AND HYDROGEN.
Claim 2
Dependent Claim
59 words
IN A METHOD OF CENTRIFUGALLY SEPARATING A FLUID FEED MATERIAL CONTAINING SUSPENDED SOLIDS, CHARACTERIZED BY THE USE OF A MULTIPLE DISCHARGE CENTRIFUGE EMBODYING A SEPARATORY ROTOR, THE IMPROVEMENT WHICH COMPRISES UTILIZING A TEMPERATURE ABOVE ABOUT 150*C. AND A PRESSURE ABOVE ABOUT 500 P.S.I. AND ENVELOPING SAID ROTOR WITH A GAS SELECTED FROM THE GROUP CONSISTING OF HELIUM AND HYDROGEN.
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |