US3910778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biological filter for the sterilization and enrichment of a gas stream with negative ions
Assignee: Individual
•
Filing: 1973-09-27
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Granted: 1975-10-07
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Expires: 1993-09-27
Abstract
Abstract A biological filter for the sterilization and enrichment of a gas stream with negative ions, wherein said filter comprises in combination, on the path of the gas molecules and in the direction of flow of the gas, a first separating electrode which is brought to a negative potential, a second extraction electrode which is brought to a positive potential and entirely covered with electric insulating material, an ultraviolet lamp for irradiating said gas stream and a third output electrode which is brought to a negative potential.
Inventors
- 👤 Manouchehr Shahgholi
- 👤 Ali Sekhavat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:27
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/16; A61L9/22; H; H01; H01T; H01T23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A BIOLOGICAL FILTER FOR THE STERILIZATION AND ENRICHMENT OF A GAS STREAM WITH NEGATIVE IONS, COMPRISING ON THE PATH OF THE GAS MOLECULES AND IN THE DIRECTION OF THE FLOW OF THE GAS, A FIRST SEPARATING ELECTRODE AT A NEGATIVE POTENTIAL-V, A SECOND EXTRACTION ELCTRODE AT A POSITIVE POTENTIAL +V AND ENTIRELY COVERED WITH ELECTRIC INSULATING MATERIAL, AN ULTRAVIOLET LAMP FOR IRRADIATING SAID GAS STREAM, A THIRD OUTPUT ELECTRODE AT A NEGATIVE POTENTIAL -V, THE THREE ELECTRODES BEIN CONDUCTIVE METALLIC GRIDS, THE SECOND ELECTRODE BEING ELECTRICALLY INSULATED FROM THE GAS STREAM BY A COVERING OF PLASTIC MATERIAL, THE ULTRAVIOLET LAMP SURROUNDING THE GAS STREAM AND THE VALUE 2V BEING BETWEEN 350 AND 400 OLTS.
Claim 2
Dependent Claim
114 words
A BIOLOGICAL FILTER FOR THE STERILIZATION AND ENRICHMENT OF A GAS STREAM WITH NEGATIVE IONS, COMPRISING ON THE PATH OF THE GAS MOLECULES AND IN THE DIRECTION OF THE FLOW OF THE GAS, A FIRST SEPARATING ELECTRODE AT A NEGATIVE POTENTIAL-V, A SECOND EXTRACTION ELCTRODE AT A POSITIVE POTENTIAL +V AND ENTIRELY COVERED WITH ELECTRIC INSULATING MATERIAL, AN ULTRAVIOLET LAMP FOR IRRADIATING SAID GAS STREAM, A THIRD OUTPUT ELECTRODE AT A NEGATIVE POTENTIAL -V, THE THREE ELECTRODES BEIN CONDUCTIVE METALLIC GRIDS, THE SECOND ELECTRODE BEING ELECTRICALLY INSULATED FROM THE GAS STREAM BY A COVERING OF PLASTIC MATERIAL, THE ULTRAVIOLET LAMP SURROUNDING THE GAS STREAM AND THE VALUE 2V BEING BETWEEN 350 AND 400 OLTS.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |