US3819489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bacteria detector
Assignee: United States Department of Health and Human Services
•
Filing: 1971-09-09
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Granted: 1974-06-25
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Expires: 1991-09-09
Abstract
Abstract A method of automatically screening bio-fluid samples for bacterial contamination. A scintillation vial is fitted with a special top in the shape of a tent made of scintillator plastic. Bacteria present in the sample will feed on carbon-14 glucose releasing carbon-14 dioxide. When the carbon-14 dioxide strikes the scintillator plastic, light flashes will be emitted, enabling the user to detect and count the amount of radiation in a standard automatic scintillation counter.
Inventors
- 👤 M Kronick
- 👤 J Maclowry
- 👤 D Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:17
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/04; Y; Y10; Y10S; Y10S435/00; Y10S435/808; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849; Y10S435/882; Y10S435/883
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2914447A
Cited
US3553082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |