US3325872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced fluid treatment apparatus
Assignee: Celanese Corp
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Filing: 1965-07-19
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Granted: 1967-06-20
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ethridge Fredrick Allen
- 👤 Bulla Jackie Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A BALANCED FLUID TREATMENT APPARATUS COMPRISING, IN COMBINATION, A HOUSING CONTAINING AN OPENING AND MEANS IN SAID HOUSING TO SUPPLY FLUID TO SAID OPENING; AND AN INSERT FOR SAID OPENING COMPRISING INLET AND OUTLET DUCTS AT THE EXTREMITIES OF SAID INSERT, CONNECTED MEANS BETWEEN SAID INLET AND OUTLET DUCTS IN WHICH THE INTERIOR OF SAID CONNECTING MEANS FORMS A PASSAGEWAY BETWEEN SAID INLET AND OUTLET DUCTS AND THE OUTER SURFACE OF SAID CONNECTING MEANS CONTAINS A CIRCUMFERENTIAL GROOVE FORMING A PLENUM IN COMBINATION WITH SAID HOUSING, AND AT LEAST ONE PAIR OF DIAMETRALLY OPPOSED FLUID CONDUITS LOCATED IN THE CIRCUMFERENTIAL GROOVE OF SAID CONNECTING MEANS, SAID CONDUITS PERPENDICULAR TO THE AXIS OF SAID PASSAGEWAY BETWEEN SAID INLET AND OUTLET DUCTS, SAID CONDUCTS OF SUFFICIENT LENGTH TO RUN FROM THE SURFACE OF SAID CIRCUMFERENTIAL GROOVE TO SAID PASSAGEWAY IN SAID CONNECTING MEANS.
Claim 2
Dependent Claim
141 words
A BALANCED FLUID TREATMENT APPARATUS COMPRISING, IN COMBINATION, A HOUSING CONTAINING AN OPENING AND MEANS IN SAID HOUSING TO SUPPLY FLUID TO SAID OPENING; AND AN INSERT FOR SAID OPENING COMPRISING INLET AND OUTLET DUCTS AT THE EXTREMITIES OF SAID INSERT, CONNECTED MEANS BETWEEN SAID INLET AND OUTLET DUCTS IN WHICH THE INTERIOR OF SAID CONNECTING MEANS FORMS A PASSAGEWAY BETWEEN SAID INLET AND OUTLET DUCTS AND THE OUTER SURFACE OF SAID CONNECTING MEANS CONTAINS A CIRCUMFERENTIAL GROOVE FORMING A PLENUM IN COMBINATION WITH SAID HOUSING, AND AT LEAST ONE PAIR OF DIAMETRALLY OPPOSED FLUID CONDUITS LOCATED IN THE CIRCUMFERENTIAL GROOVE OF SAID CONNECTING MEANS, SAID CONDUITS PERPENDICULAR TO THE AXIS OF SAID PASSAGEWAY BETWEEN SAID INLET AND OUTLET DUCTS, SAID CONDUCTS OF SUFFICIENT LENGTH TO RUN FROM THE SURFACE OF SAID CIRCUMFERENTIAL GROOVE TO SAID PASSAGEWAY IN SAID CONNECTING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |