US3407573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic columns
Assignee: Kovalus Separation Solutions LLC
•
Filing: 1967-06-07
•
Granted: 1968-10-29
•
Expires: 1987-06-07
Abstract
No abstract record available.
Inventors
- 👤 Richard P Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:40
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; G01N30/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2920717A
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US3293174A
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US3298973A
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US3307333A
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US3303146A
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US3357158A
Cited
US3347020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |