US3579305A
Expired / Lapsed
US
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Scrubber apparatus
Assignee: Beckman Coulter Inc
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Filing: 1968-07-25
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Granted: 1971-05-18
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Expires: 1988-07-25
Abstract
Abstract SOLID PHASE CHEMICAL SRUBBER FOR SELECTIVELY REMOVING INTERFERRENTS FROM AN OZONE BEARING SAMPLE GAS STREAM WHICH IS TO BE AMALYZED FOR ITS OZONE CONTENT. THE SCRUBBER CONTAINS AN ALKALI OR ALKALINE EARTH HYDROXIDE, PREFERABLY CA(OH)2 OR KOH, WHICH EFFECTIVELY REMOVES BOTH POSITIVE AND NEGATIVE INTERFERRENTS FROM THE GAS STREAM, BUT DOES NOT EFFEXT THE OZONE IN THE STREAM.
Inventors
- 👤 Radhakrishna M Neti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:30
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/405; C; C01; C01B; C01B13/00; C01B13/10; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/100833; Y10T436/17; Y10T436/173845; Y10T436/175383; Y10T436/177692; Y10T436/178459; Y10T436/18; Y10T436/182; Y10T436/184; Y10T436/186; Y10T436/19; Y10T436/20; Y10T436/206664
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |