US3243105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for separating particulate substances by reorienting gradients
Assignee: Individual
•
Filing: 1963-11-15
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Granted: 1966-03-29
•
Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Norman G Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:29
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF SEPARATING THE PARTICULATE COMPONENTS OF A SAMPLE ACCORDING TO DENSITY AND SEDIMENTATION RATE COMPRISING THE STEPS OF INTRODUCING A LIQUID HAVING A DENSITY GRADIENT INTO THE ROTOR OF A BOWL TYPE CENTRIFUGE UNDER STATIC CONDITIONS, PLACING A COLLOID SAMPLE HAVING PARTICULAR COMPONENTS OF DIFFERENT DENSITIES OR SEDIMENTATION RATES TO BE CLASSIFIED AND SEPARATED IN THE LIQUID, CENTRIFUGING THE LIQUID AND SAMPLE TO SEPARATE THE PARTICULATE COMPONENTS OF THE SAMPLE, THEN SUCCESSIVELY DRAINING PORTIONS OF THE MIXTURE FROM THE CENTRIFUGE TO RECOVER THE SEPARATED COMPONENTS OF THE SAMPLE.
Claim 2
Independent Claim
90 words
A METHOD OF SEPARATING THE PARTICULATE COMPONENTS OF A SAMPLE ACCORDING TO DENSITY AND SEDIMENTATION RATE COMPRISING THE STEPS OF INTRODUCING A LIQUID HAVING A DENSITY GRADIENT INTO THE ROTOR OF A BOWL TYPE CENTRIFUGE UNDER STATIC CONDITIONS, PLACING A COLLOID SAMPLE HAVING PARTICULAR COMPONENTS OF DIFFERENT DENSITIES OR SEDIMENTATION RATES TO BE CLASSIFIED AND SEPARATED IN THE LIQUID, CENTRIFUGING THE LIQUID AND SAMPLE TO SEPARATE THE PARTICULATE COMPONENTS OF THE SAMPLE, THEN SUCCESSIVELY DRAINING PORTIONS OF THE MIXTURE FROM THE CENTRIFUGE TO RECOVER THE SEPARATED COMPONENTS OF THE SAMPLE.
References Cited (Backward Citations)
US3075694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |