Patent US2941908A successfully refreshed from Google Patents.
US2941908A
Expired / Lapsed
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Ultrasonic cleaning method and apparatus
Assignee: Bendix Aviation Corp
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Filing: 1955-08-01
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Granted: 1960-06-21
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 James R Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:05
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
THE METHOD OF EXTRACTING CONTAMINANTS FROM A FLUID-PERMEABLE BODY WHICH COMPRISES SUBJECTING THE BODY TO THE ACTION OF ULTRASONIC WAVES AND SIMULTANEOUSLY TO A SERIES OF ALTERNATING HIGHER AND LOWER EXTERNAL FLUID PRESSURES.
Claim 2
Independent Claim
33 words
THE METHOD OF EXTRACTING CONTAMINANTS FROM A FLUID-PERMEABLE BODY WHICH COMPRISES SUBJECTING THE BODY TO THE ACTION OF ULTRASONIC WAVES AND SIMULTANEOUSLY TO A SERIES OF ALTERNATING HIGHER AND LOWER EXTERNAL FLUID PRESSURES.
Claim 3
Dependent Claim
33 words
ULTRASONIC FLUID TREATMENT APPARATUS COMPRISING A CLOSED FLUID CONTAINER, MEANS ENGAGING THE CONTAINER FOR TRANSMITTING ULTRASONIC WAVES TO CONTENTS OF THE CONTAINER, AND MEANS FOR SIMULTANEOUSLY CYCLICALLY VARYING THE PRESSURE IN THE CONTAINER.
Claim 4
Dependent Claim
33 words
ULTRASONIC FLUID TREATMENT APPARATUS COMPRISING A CLOSED FLUID CONTAINER, MEANS ENGAGING THE CONTAINER FOR TRANSMITTING ULTRASONIC WAVES TO CONTENTS OF THE CONTAINER, AND MEANS FOR SIMULTANEOUSLY CYCLICALLY VARYING THE PRESSURE IN THE CONTAINER.
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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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |