US2675349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion apparatus
Assignee: Individual
•
Filing: 1952-01-04
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Granted: 1954-04-13
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Expires: 1972-01-04
Abstract
No abstract record available.
Inventors
- 👤 Harry A Saroff
- 👤 George H L Dillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:32
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/08; B01D2313/00; B01D2313/02; B01D2313/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A DIFFUSION COLUMN COMPRISING A SPACED PAIR OF UPWARDLY EXTENDING SUPPORTING MEMBERS, A PLURALITY OF HORIZONTALLY DISPOSED MEMBRANE SUPPORTING MEMBERS MOUNTED ON EACH OF SAID SUPPORTING MEMBERS, THE MEMBRANE SUPPORTING MEMBERS IN ONE OF SAID SUPPORTING MEMBERS BEING VERTICALLY DISPLACED WITH RESPECT TO THE ADJACENT OPPOSITE MEMBRANE SUPPORTING MEMBERS IN THE OTHER SUPPORTING MEMBER, A DIALYZING MEMBRANE MOUNTED UPON THE MEMBRANE SUPPORTS OF EACH OF SAID SUPPORTING MEMBERS, SAID MEMBRANE EXTENDING TRANSVERSELY OF SAID DIFFUSION COLUMN ALTERNATELY BETWEEN ADJACENT OPPOSITE MEMBRANE SUPPORTING MEMBERS THROUGHOUT SAID COLUMN WHEREBY SAID MEMBRANE OCCUPIES A VERTICALLY DISPOSED SINUOUS PATH, MEANS FOR DEPOSITING A LIQUID CONTAINING DISSOLVED MOLECULES ON ONE OF THE SURFACES OF SAID MEMBRANE ADJACENT THE UPPERMOST END THEREOF, MEANS FOR DEPOSITING A WASH LIQUID TO THE OTHER SURFACE OF SAID MEMBRANE ADJACENT THE UPPERMOST END THEREOF, MEANS FOR REMOVING THE LIQUID CONTAINING DISSOLVED MOLECULES FROM THE SURFACE OF SAID MEMBRANE MOUNTED ON ONE OF SAID SUPPORTING MEMBERS, AND MEANS FOR REMOVING WASH LIQUID FROM THE OTHER SURFACE OF SAID MEMBRANE MOUNTED ON ONE OF SAID SUPPORTING MEMBERS.
Claim 2
Dependent Claim
175 words
A DIFFUSION COLUMN COMPRISING A SPACED PAIR OF UPWARDLY EXTENDING SUPPORTING MEMBERS, A PLURALITY OF HORIZONTALLY DISPOSED MEMBRANE SUPPORTING MEMBERS MOUNTED ON EACH OF SAID SUPPORTING MEMBERS, THE MEMBRANE SUPPORTING MEMBERS IN ONE OF SAID SUPPORTING MEMBERS BEING VERTICALLY DISPLACED WITH RESPECT TO THE ADJACENT OPPOSITE MEMBRANE SUPPORTING MEMBERS IN THE OTHER SUPPORTING MEMBER, A DIALYZING MEMBRANE MOUNTED UPON THE MEMBRANE SUPPORTS OF EACH OF SAID SUPPORTING MEMBERS, SAID MEMBRANE EXTENDING TRANSVERSELY OF SAID DIFFUSION COLUMN ALTERNATELY BETWEEN ADJACENT OPPOSITE MEMBRANE SUPPORTING MEMBERS THROUGHOUT SAID COLUMN WHEREBY SAID MEMBRANE OCCUPIES A VERTICALLY DISPOSED SINUOUS PATH, MEANS FOR DEPOSITING A LIQUID CONTAINING DISSOLVED MOLECULES ON ONE OF THE SURFACES OF SAID MEMBRANE ADJACENT THE UPPERMOST END THEREOF, MEANS FOR DEPOSITING A WASH LIQUID TO THE OTHER SURFACE OF SAID MEMBRANE ADJACENT THE UPPERMOST END THEREOF, MEANS FOR REMOVING THE LIQUID CONTAINING DISSOLVED MOLECULES FROM THE SURFACE OF SAID MEMBRANE MOUNTED ON ONE OF SAID SUPPORTING MEMBERS, AND MEANS FOR REMOVING WASH LIQUID FROM THE OTHER SURFACE OF SAID MEMBRANE MOUNTED ON ONE OF SAID SUPPORTING MEMBERS.
References Cited (Backward Citations)
US2247143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |