Patent US4595885A successfully refreshed from Google Patents.
Patent US3752743A successfully refreshed from Google Patents.
US3752743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biological indicator
Assignee: COLAB LAB Inc
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Filing: 1972-03-15
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Granted: 1973-08-14
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Expires: 1992-03-15
Abstract
Abstract A STERILIZING TEST DEVICE IS PROVIDED FOR TESTING THE COMPLETENESS OF STERILLIZATION PROCEDURES. THE DEVICE COMPRISES A DEMI-RIGID TRANSPARENT ENVELOPE WITH SEPARATE COMPARTMENTS FOR GAS ACCESS, FOR THE CULTURE MEDIUM AND FOR A SOURCE OF MICRO-ORGANISMS, THE COMPARTMENTS BEING INTERCONNECTED SO THAT THE CULTURE MEDIUM CAN BE PASSED INTO CONTACT WITH THE MICRO-ORGANISMS AND SO THAT EXTERNAL AIR WILL BE PROVIDED TO THE MICRO-ORGANISMS DURING THEIR CULTURE GROWTH.
Inventors
- 👤 J Henshilwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
C; C12; C12M; C12M37/00; C12M37/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |