US4720342B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow-fiber filter module with filtrate conduit
Assignee: Mitsubishi Chemical Corp
•
Filing: 1985-05-21
•
Granted: 1993-05-18
•
Expires: 2005-05-21
Abstract
No abstract record available.
Inventors
- 👤 Takemura Tohru
- 👤 Yoshida Haruhiko
- 👤 Takahashi Hiroshi
- 👤 Fujinaga Yoshikazu
- 👤 Okamoto Masashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/031; B01D63/04; B01D63/043; B01D2313/00; B01D2313/13; B01D2313/54
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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |