Patent US1582214A successfully refreshed from Google Patents.
Patent US5207812B1 successfully refreshed from Google Patents.
US5207812B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cartridge
Assignee: W.L. Gore and Associates Inc
•
Filing: 1992-05-08
•
Granted: 1996-10-01
•
Expires: 2012-05-08
Abstract
No abstract record available.
Inventors
- 👤 Gregory S Tronto
- 👤 Raymond Wnenchak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:21
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D39/1692; B01D46/24; B01D46/2403; B01D46/2411; B01D46/2414; B01D46/66; B01D46/70; B01D46/71
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1999-10-01 | 2000-04-01 | 2000-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-01 | 2004-04-01 | 2004-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-01 | 2008-04-01 | 2008-10-01 | $7700.00 | Window Closed / Lapsed |