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US3743581A
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US
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Microbiological detection apparatus
Assignee: Bactomatic Inc
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Filing: 1970-10-21
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Granted: 1973-07-03
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Expires: 1990-10-21
Abstract
Abstract MICROBIOLOGICAL GROWTH IS DETERMINED WITH GREAT RAPIDITY BY MEASURING ELECTRICAL CONDUCTIVITY CHANGES IN SEALED CELL HAVING SELECTED VARIETIES OF NUTRIENT MEDIA INOCULATED WITH A SAMPLE CONTAINING SUSPECTED MICROBIAL CONTAMINATION. THE MEASUREMENT AND SELECTION OF NUTRIENT MEDIA ALLOWS DETERMINATION OF THE PRESENCE, TYPE, ANTIBOTIC SENSITIVITY AND A QUANTITATIVE COUNT OF BACTERIA AND OTHER MICRO-ORGANISMS PRESENT IN ANY SELECTED SAMPLE SEVERAL TYPES OF GROWTH AND CONDUCTIVITY CELLS ARE PROVIDED FOR MEASURING THE CHANGE IN ELECTRICAL CONDUCTIVITY. D R A W I N G
Inventors
- 👤 P Cady
- 👤 W Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
C; C12; C12M; C12M41/00; C12M41/30; C12M41/36; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |