US3149758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination filter and flow divider for gas and liquid
Assignee: EMD Millipore Corp
•
Filing: 1961-11-01
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Granted: 1964-09-22
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 John H Bush
- 👤 Charles W Fifield
- 👤 James L Dwyer
- 👤 David B Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:51
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0031; A; A61; A61M; A61M11/00; A61M11/02; A61M31/00; A61J; A61J1/00; A61J1/14; A61J1/1443; A61J1/145; A61J1/1456; A61J1/1468
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN COMBINATION WITH MEANS FORMING A CHAMBER FOR LIQUID AND HAVING LIQUID AND GAS FLOW MEANS COMMUNICATING WITH SAID CHAMBER IN PARALLEL FLUID-FLOW RELATION, AN HYDROPHILIC FILTER READILY WETTED BY THE LIQUID AND ARRANGED IN SAID LIQUID FLOW MEANS AND SUFFICIENTLY POROUS TO FILTER LIQUID THERETHROUGH AND TO BLOCK THE FLOW OF GAS THERETHROUGH WHEN WET, AND AN HYDROPHOBIC FILTER REPELLENT TO WETTING BY THE LIQUID AND ARRANGED IN SAID GAS FLOW MEANS AND SUFFICIENTLY POROUS TO BLOCK THE FLOW OF LIQUID THERETHROUGH AND TO FILTER GAS THERETHROUGH.
Claim 2
Dependent Claim
88 words
IN COMBINATION WITH MEANS FORMING A CHAMBER FOR LIQUID AND HAVING LIQUID AND GAS FLOW MEANS COMMUNICATING WITH SAID CHAMBER IN PARALLEL FLUID-FLOW RELATION, AN HYDROPHILIC FILTER READILY WETTED BY THE LIQUID AND ARRANGED IN SAID LIQUID FLOW MEANS AND SUFFICIENTLY POROUS TO FILTER LIQUID THERETHROUGH AND TO BLOCK THE FLOW OF GAS THERETHROUGH WHEN WET, AND AN HYDROPHOBIC FILTER REPELLENT TO WETTING BY THE LIQUID AND ARRANGED IN SAID GAS FLOW MEANS AND SUFFICIENTLY POROUS TO BLOCK THE FLOW OF LIQUID THERETHROUGH AND TO FILTER GAS THERETHROUGH.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |