Patent US2998353A successfully refreshed from Google Patents.
US2998353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for determining the sensitivity of bacteria to antibiotics
Assignee: Individual
•
Filing: 1959-08-24
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Granted: 1961-08-29
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Expires: 1979-08-24
Abstract
No abstract record available.
Inventors
- 👤 Wayne L Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:08
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/18; Y; Y10; Y10S; Y10S435/00; Y10S435/805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A DEVICE FOR DETERMINING THE SENSITIVITY OF BACTERIA TO ANTIBIOTICS, A CONTAINER ADAPTED TO BE SEALED AGAINST ENTRANCE OF AIR THEREINTO AND A DEHYDRATED, ABSORBENT SHEET IN SAID CONTAINER, SAID SHEET BEING FLOATABLE ON A WATER SURFACE FOR REHYDRATION, SAID SHEET BEING IMPREGNATED WITH A BACTERIAL NUTRIENT MEDIUM, A GEL, SAID GEL BEING PRESENT IN AN AMOUNT SUFICIENT TO INCREASE THE REHYDRATION TIME OF SAID SHEET TO ABOUT 15-30 SECONDS, AND A TETRAZOLIUM CHLORIDE OVER SUBSTANTIALLY ALL OF ITS SURFACE, SAID SHEET ALSO BEING IMPREGNATED WITH DIFFERENT ANTIBIOTICS AT SPACED-APART AREAS.
Claim 2
Dependent Claim
92 words
IN A DEVICE FOR DETERMINING THE SENSITIVITY OF BACTERIA TO ANTIBIOTICS, A CONTAINER ADAPTED TO BE SEALED AGAINST ENTRANCE OF AIR THEREINTO AND A DEHYDRATED, ABSORBENT SHEET IN SAID CONTAINER, SAID SHEET BEING FLOATABLE ON A WATER SURFACE FOR REHYDRATION, SAID SHEET BEING IMPREGNATED WITH A BACTERIAL NUTRIENT MEDIUM, A GEL, SAID GEL BEING PRESENT IN AN AMOUNT SUFICIENT TO INCREASE THE REHYDRATION TIME OF SAID SHEET TO ABOUT 15-30 SECONDS, AND A TETRAZOLIUM CHLORIDE OVER SUBSTANTIALLY ALL OF ITS SURFACE, SAID SHEET ALSO BEING IMPREGNATED WITH DIFFERENT ANTIBIOTICS AT SPACED-APART AREAS.
References Cited (Backward Citations)
US2713581A
Cited
US2904474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |