US3104960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas flow apparatus
Assignee: Varian Medical Systems Inc
•
Filing: 1960-05-24
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Granted: 1963-09-24
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Expires: 1980-05-24
Abstract
No abstract record available.
Inventors
- 👤 Richard H Chamberlin
- 👤 Lowell A Noble
- 👤 William H Sain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:41
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01J; B01J4/00; B01J4/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A GAS FLOW APPARATUS COMPRISING A TUBULAR SEMIPERMEABLE MEMBRANE CLOSED AT ONE END AND DISPOSED IN AN ENVELOPE HAVING TWO APERTURES, SAID ENVELLPE FORMING A CONTINUOUS OPEN PASSAGE FROM EACH OF SAID APERTURES TO THE ADJACENT SIDE OF SAID MEMBRANE, THE WALL OF SAID ENBELOPE BEING ENTIRELY CLOSED EXCEPT FOR SAID TWO APERTURES, AN APERTURED WALL IN SAID ENVELOPE, SAID MEMBRANE BEING TWO APERTURES IN SAID ENVELOPE, SAID MEMBRANE BEING BONDED BY ITS OPEN END TO THE PERIPHERY OF THE APERTURE IN SAID WALL, A FILAMENT DISPOSED WITHIN SAID MEMBERANE, SAID FILAMENT HAVING ONE END CONNECTED TO SAID MEMBRANE AT THE CLOSED END THEREOF, AND ELECTRIC LEAD-THROUGH MEANS DISPOSED THROUGH SAID ENVELOPE AND CONNECTED TO THE OTHER END OF SAID FILAMENT.
Claim 2
Dependent Claim
121 words
A GAS FLOW APPARATUS COMPRISING A TUBULAR SEMIPERMEABLE MEMBRANE CLOSED AT ONE END AND DISPOSED IN AN ENVELOPE HAVING TWO APERTURES, SAID ENVELLPE FORMING A CONTINUOUS OPEN PASSAGE FROM EACH OF SAID APERTURES TO THE ADJACENT SIDE OF SAID MEMBRANE, THE WALL OF SAID ENBELOPE BEING ENTIRELY CLOSED EXCEPT FOR SAID TWO APERTURES, AN APERTURED WALL IN SAID ENVELOPE, SAID MEMBRANE BEING TWO APERTURES IN SAID ENVELOPE, SAID MEMBRANE BEING BONDED BY ITS OPEN END TO THE PERIPHERY OF THE APERTURE IN SAID WALL, A FILAMENT DISPOSED WITHIN SAID MEMBERANE, SAID FILAMENT HAVING ONE END CONNECTED TO SAID MEMBRANE AT THE CLOSED END THEREOF, AND ELECTRIC LEAD-THROUGH MEANS DISPOSED THROUGH SAID ENVELOPE AND CONNECTED TO THE OTHER END OF SAID FILAMENT.
References Cited (Backward Citations)
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Cited
US2456163A
Cited
US2671337A
Cited
US2924630A
Cited
US2911057A
Cited
US2986641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |