Patent US6270453B1 successfully refreshed from Google Patents.
Patent EP0553960A1 successfully refreshed from Google Patents.
US2683117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialyzers
Assignee: Individual
•
Filing: 1950-04-10
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Granted: 1954-07-06
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Expires: 1970-04-10
Abstract
No abstract record available.
Inventors
- 👤 Stephan S Rosenak
- 👤 Saltzman Abraham
- 👤 Joseph L Hutchings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:44
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/06; B01D63/068; B01D2313/00; B01D2313/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A DIALYZER, IN COMBINATION, AN ELONGATED CHANNEL HAVING AN APERTURE IN AN END WALL THEREOF, AN ELONGATED TUBULAR SEPTUM DISPOSED WITHIN SAID CHANNEL, A CLAMPING ASSEMBLY FOR RELEASABLY SUPPORTING THE END OF THE SEPTUM IN DESIRED POSITION WITHIN THE CHANNEL, SAID ASSEMBLY INCLUDING A MEMBER HAVING A PORTION DISPOSED WITHIN THE SEPTUM AT ONE END THEREOF, A SECOND MEMBER ENCIRCLING SAID FIRST MEMBER AND THE INTERPOSED END PORTION OF THE SEPTUM, SAID MEMBERS BEING RELATIVELY MOVABLE TO CLAMP OR RELEASE THE INTERMEDIATE SEPTUM AS DESIRED, AND ONE SUCH MEMBER HAVING A PORTION PROJECTING THROUGH SAID APERTURE IN THE CHANNEL WALL TO THE EXTERIOR OF SAID CHANNEL, AND MEANS ASSOCIATED WITH THE PROJECTING PORTION OF SAID MEMBER, AND LOCATED WITHOUT THE CHANNEL, FOR RELATIVELY MOVING SAID MEMBERS TO CLAMP SAID SEPTUM OR RELEASE THE SAME AS DESIRED.
Claim 2
Dependent Claim
137 words
IN A DIALYZER, IN COMBINATION, AN ELONGATED CHANNEL HAVING AN APERTURE IN AN END WALL THEREOF, AN ELONGATED TUBULAR SEPTUM DISPOSED WITHIN SAID CHANNEL, A CLAMPING ASSEMBLY FOR RELEASABLY SUPPORTING THE END OF THE SEPTUM IN DESIRED POSITION WITHIN THE CHANNEL, SAID ASSEMBLY INCLUDING A MEMBER HAVING A PORTION DISPOSED WITHIN THE SEPTUM AT ONE END THEREOF, A SECOND MEMBER ENCIRCLING SAID FIRST MEMBER AND THE INTERPOSED END PORTION OF THE SEPTUM, SAID MEMBERS BEING RELATIVELY MOVABLE TO CLAMP OR RELEASE THE INTERMEDIATE SEPTUM AS DESIRED, AND ONE SUCH MEMBER HAVING A PORTION PROJECTING THROUGH SAID APERTURE IN THE CHANNEL WALL TO THE EXTERIOR OF SAID CHANNEL, AND MEANS ASSOCIATED WITH THE PROJECTING PORTION OF SAID MEMBER, AND LOCATED WITHOUT THE CHANNEL, FOR RELATIVELY MOVING SAID MEMBERS TO CLAMP SAID SEPTUM OR RELEASE THE SAME AS DESIRED.
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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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |