US3297532A
Expired / Lapsed
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Centrifugation method
Assignee: Thermo IEC Inc
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Filing: 1962-04-19
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Granted: 1967-01-10
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Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 Alan R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:23
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/009; B01D21/26; B01D21/262; B01D2221/00; B01D2221/10; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/83
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
53 words
IN A CENTRIFUGE-SEPARATION METHOD FOR LIQUID SUSPENSIONS CONTAINING A DISCONTINUOUS PHASE WHOSE DIMENSIONS DO NOT EXCEED COLLOIDAL DIMENSIONS, THE STEPS OF FREEZING THE SAID LIQUID SUSPENSION, AND CENTRIFUGING THE FROZEN SUSPENSION WHILE MAINTAINING THE LIQUID SUSPENSION IN A FROZEN STATE AND THEREBY CAUSING SEPARATION OF THE DISCONTINUOUS PHASE OF SAID FROZEN LIQUID SUSPENSION.
Claim 2
Dependent Claim
53 words
IN A CENTRIFUGE-SEPARATION METHOD FOR LIQUID SUSPENSIONS CONTAINING A DISCONTINUOUS PHASE WHOSE DIMENSIONS DO NOT EXCEED COLLOIDAL DIMENSIONS, THE STEPS OF FREEZING THE SAID LIQUID SUSPENSION, AND CENTRIFUGING THE FROZEN SUSPENSION WHILE MAINTAINING THE LIQUID SUSPENSION IN A FROZEN STATE AND THEREBY CAUSING SEPARATION OF THE DISCONTINUOUS PHASE OF SAID FROZEN LIQUID SUSPENSION.
Claim 3
Dependent Claim
17 words
THE METHOD OF CLAIM 1 IN WHICH THE SUSPENSION IS PLASMA AND THE DISCONTINUOUS PHASE IS FIBRINOGEN.
References Cited (Backward Citations)
US2862824A
Cited
US3009388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |