US3237375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling gas filtering devices
Assignee: GEA Group AG
•
Filing: 1960-12-16
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Granted: 1966-03-01
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Expires: 1980-12-16
Abstract
No abstract record available.
Inventors
- 👤 Schwarz Ernst
- 👤 Schlitt Rolf
- 👤 Wiemer Jean
- 👤 Kopp Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:04
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/01; B03C3/011; G; G01; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
PROCESS FOR OPERATING AN ELECTROFILTERING MECHANISM WHICH COMPRISES PASSING GAS THROUGH A PLURALITY OF ELECTROFILTERS IN PARALLEL, DETERMINING THE DUST CONTENT OF THE GAS ISSUING FROM EACH ELECTROFILTER, AND CONTROLLING THE INPUT OF GAS TO EACH OF THE ELECTROFILTERS SO AS TO MAINTAIN THE FLOWS THROUGH THE DIFFERENT ELECTROFILTERS SUBSTANTIALLY INVERSELY PROPORTIONAL TO THE RELATIVE PERCENTAGES OF DUST CONTENT OF THE GAS LEAVING EACH ELECTROFILTER.
Claim 2
Dependent Claim
65 words
PROCESS FOR OPERATING AN ELECTROFILTERING MECHANISM WHICH COMPRISES PASSING GAS THROUGH A PLURALITY OF ELECTROFILTERS IN PARALLEL, DETERMINING THE DUST CONTENT OF THE GAS ISSUING FROM EACH ELECTROFILTER, AND CONTROLLING THE INPUT OF GAS TO EACH OF THE ELECTROFILTERS SO AS TO MAINTAIN THE FLOWS THROUGH THE DIFFERENT ELECTROFILTERS SUBSTANTIALLY INVERSELY PROPORTIONAL TO THE RELATIVE PERCENTAGES OF DUST CONTENT OF THE GAS LEAVING EACH ELECTROFILTER.
References Cited (Backward Citations)
US1379056A
Cited
US1337488A
Cited
US2667779A
Cited
US2730005A
Cited
US2819774A
Cited
US2949976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |