US3402818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Osmosis filtering method and device
Assignee: Individual
•
Filing: 1964-09-14
•
Granted: 1968-09-24
•
Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Sasaki Jiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:06
CPC Classifications
B; B01; B01D; B01D35/00; B01D61/00; B01D61/14; B01D61/147; B01D61/18; B01D63/00; B01D63/06; B01D2313/00; B01D2313/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN OSMOTIC FILTERING METHOD IN WHICH THE LIQUID TO BE FILTERED IS CONTACTED WITH A FILTER BODY HAVING A LARGE ADHESION AREA AND INNUMERABLE CAPILLARY PASSAGES CONNECTED THEREWITH, PASSING THE LIQUID INTO CONTACT WITH THE ADHESION AREA FOR LOOSE ADHESION AND COLLECTION THEREON OF IMPURITIES TO BE FILTERED OUT WITH SUBSTANTIAL PRECIPITATION THEREOF BY GRAVITY AFTER INCREASING IN SIZE WITHOUT SUBSTANTIAL PENETRATION OF THE FILTER BODY, AND WITHDRAWING PURIFIED LIQUID FROM THE OPPOSITE SIDE OF THE FILTER BODY AFTER CAPILLARY MOVEMENT THEREOF THROUGH THE CAPILLARY PASSAGES.
Claim 2
Dependent Claim
86 words
AN OSMOTIC FILTERING METHOD IN WHICH THE LIQUID TO BE FILTERED IS CONTACTED WITH A FILTER BODY HAVING A LARGE ADHESION AREA AND INNUMERABLE CAPILLARY PASSAGES CONNECTED THEREWITH, PASSING THE LIQUID INTO CONTACT WITH THE ADHESION AREA FOR LOOSE ADHESION AND COLLECTION THEREON OF IMPURITIES TO BE FILTERED OUT WITH SUBSTANTIAL PRECIPITATION THEREOF BY GRAVITY AFTER INCREASING IN SIZE WITHOUT SUBSTANTIAL PENETRATION OF THE FILTER BODY, AND WITHDRAWING PURIFIED LIQUID FROM THE OPPOSITE SIDE OF THE FILTER BODY AFTER CAPILLARY MOVEMENT THEREOF THROUGH THE CAPILLARY PASSAGES.
References Cited (Backward Citations)
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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) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |