Patent US4110841A successfully refreshed from Google Patents.
Patent US3335545A successfully refreshed from Google Patents.
US3335545A
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Gas separation by differential permeation
Assignee: General Electric Co
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Filing: 1965-07-01
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Granted: 1967-08-15
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Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 Walter L Robb
- 👤 Donald L Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:17
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/38; B01D53/00; B01D53/22; B01D53/228; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A PROCESS FOR THE ALTERATION OF THE COMPOSITION OF A MIXTURE OF GASES WHEREIN THE INITIAL MIXTURE OF GASES IS BROUGHT INTO CONTACT WITH ONE SIDE OF A PERMEABLE MEMBRANE AND A DIFFERENCE IN PARTIAL PRESSURE FOR SPECIFICGASEOUS COMPONENTS IS MAINTAINED BETWEEN SAID ONE SIDE AND THE OPPOSITE SIDE OF THE SAID MEMBRANE WHEREBY SAID SPECIFIC GASEOUS COMPONENTS PERMEATE THROUGH SAID FILM TO PRODUCE A GAS MIXTURE ON SAID OPPOSITE SIDE ALTERED FROM THE COMPOSITION OF THE INITIAL MIXTURE, THE IMPROVEMENT COMPRISING THE STEP OF: (A) CONDUCTING THE PERMEATION OF SAID SPECIFIC COMPONENTS THROUGH A THIN STATIONARY LIQUID FILM.
Claim 2
Dependent Claim
100 words
IN A PROCESS FOR THE ALTERATION OF THE COMPOSITION OF A MIXTURE OF GASES WHEREIN THE INITIAL MIXTURE OF GASES IS BROUGHT INTO CONTACT WITH ONE SIDE OF A PERMEABLE MEMBRANE AND A DIFFERENCE IN PARTIAL PRESSURE FOR SPECIFICGASEOUS COMPONENTS IS MAINTAINED BETWEEN SAID ONE SIDE AND THE OPPOSITE SIDE OF THE SAID MEMBRANE WHEREBY SAID SPECIFIC GASEOUS COMPONENTS PERMEATE THROUGH SAID FILM TO PRODUCE A GAS MIXTURE ON SAID OPPOSITE SIDE ALTERED FROM THE COMPOSITION OF THE INITIAL MIXTURE, THE IMPROVEMENT COMPRISING THE STEP OF: (A) CONDUCTING THE PERMEATION OF SAID SPECIFIC COMPONENTS THROUGH A THIN STATIONARY LIQUID FILM.
References Cited (Backward Citations)
US1518784A
Cited
GB270287A
Cited
US2584785A
Cited
US2650670A
Cited
US2972349A
Cited
US3133132A
Cited
US3220960A
Cited
US3244763A
Cited
US3225524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |