US4451562B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood oxygenator
Assignee: Terumo BCT Inc
•
Filing: 1982-04-26
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Granted: 1997-07-29
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Expires: 2002-04-26
Abstract
No abstract record available.
Inventors
- 👤 Roger J Elgas
- 👤 Timothy M Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/44; A61M1/00; A61M1/14; A61M1/16; A61M1/1621; A61M1/1629; A61M1/1698; A61M1/36; A61M1/3687; A61M1/369
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-28 | 2001-01-27 | 2001-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-28 | 2005-01-27 | 2005-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-28 | 2009-01-27 | 2009-07-29 | $7700.00 | Window Closed / Lapsed |