Patent US3335946A successfully refreshed from Google Patents.
US3335946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating disks for centrifuges
Assignee: Czech Academy of Sciences
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Filing: 1965-04-12
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Granted: 1967-08-15
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Putterlik Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:33
CPC Classifications
B; B04; B04B; B04B7/00; B04B7/08; B04B7/12; B04B7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A SEPARATING DISK FOR A CENTRIGUGE, SAID DISK BEING OF A MATERIAL HAVING A SPECIFIC GRAVITY OF LESS THAN APPROXIMATELY 2.0 AND A MODULUS OF ELASTICITY IN TENSION OF LESS THAN APPROXIMATELY 1000 KG./MM.2.
Claim 2
Dependent Claim
34 words
A SEPARATING DISK FOR A CENTRIGUGE, SAID DISK BEING OF A MATERIAL HAVING A SPECIFIC GRAVITY OF LESS THAN APPROXIMATELY 2.0 AND A MODULUS OF ELASTICITY IN TENSION OF LESS THAN APPROXIMATELY 1000 KG./MM.2.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |