US3785930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiological activity testing device
Assignee: ECKRICH P SONS Inc
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Filing: 1971-12-22
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Granted: 1974-01-15
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Expires: 1991-12-22
Abstract
Abstract A DEVICE FOR DETERMINING MICROBIOLOGICAL ACTIVITY IN MEATS. A SIMPLE, ECONOMICAL AND DISPOSABLE TESTING DEVICE IS PROVIDED BY A FOLDED-OVER TRANSPARENT SHEET TO WHICH IS SECURED A SHEET OF A RESAZURIN DYE-CONTAINING MATERIAL, A SAMPLE IS BROUGHT, DIRECTLY OR INDIRECTLY, INTO CONTACT WITH THE SHEET OF DYE-CONTAINING MATERIAL AND THEREAFTER THE TRANSPARENT SHEET IS FOLDED OVER THE SAME TO PRECLUDE MOISTURE LOSS DURING INCUBATION. COLOR CHANGE MAY BE READILY OBSERVED THROUGH THE TANSPARENT SHEET AND THE TIME REQUIRED FOR COLOR CHANGE TAKEN AS A MEASURE OF THE MICROBIOLOGICAL ACTIVITY IN THE MEAT.
Inventors
- 👤 R Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
B; B65; B65B; B65B25/00; B65B25/06; B65B25/065; B65B25/067; C; C12; C12M; C12M23/00; C12M23/02; C12M23/04; C12M23/22; C12M41/00; C12M41/30; C12M41/36; G; G01; G01N; G01N31/00; G01N31/22; Y; Y10; Y10S; Y10S435/00; Y10S435/805; Y10S435/81
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |