US3238125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for effecting continuous filtration
Assignee: Asahi Kasei Corp
•
Filing: 1962-12-13
•
Granted: 1966-03-01
•
Expires: 1982-12-13
Abstract
No abstract record available.
Inventors
- 👤 Mihara Kazuhiko
- 👤 Yamashiki Takashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:47
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01D; B01D35/00; B01D35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2973319A
Cited
US3152072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |