US3406831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cartridge for filtering liquids
Assignee: EMD Millipore Corp
•
Filing: 1965-11-23
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Granted: 1968-10-22
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Expires: 1985-11-23
Abstract
No abstract record available.
Inventors
- 👤 John H Bush
- 👤 John E Weyand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:13
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D17/00; B01D17/08; B01D17/085; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/19; B01D29/50; B01D29/52; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0438
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |