US3730842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for determining bacterial drug sensitivity
Assignee: Bayer Corp
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Filing: 1970-05-04
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Granted: 1973-05-01
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Expires: 1990-05-04
Abstract
Abstract THERE IS DESCRIBED A METHOD OF RAPIDLY DETERMINING THE SENSITIVITY OF BACTERIA TO ONE OR MORE ENTIBIOTIC AGENTS. THE PROCESS INVOLVES SUBJECTING THE TEST BACTERIAL TO A HIGHLY DIRECTIONAL NARROW BEAM OF LIGHT AND MEASURING THE INTENSITY OF THE SCATTERED LIGHT AS A FUNCTION OF SCATTERING ANGLE AND REPEATING THE MEASUREMENT AT SUCCESSIVE TIME INTERVALS TO DETERMINE THE CHANGES IN THE PATTERN OF SCATTERED LIGHT INTENSITY. SENSITIVITY OF THE BACTERIAL TO THE ANTIBIOTIC AGENT RESULTS IN A VERY NOTICEABLE CHANGE IN THE LIGHT SCATTERING PATTERN PRODUCED BY THE BACTERIA.
Inventors
- 👤 P Wyatt
- 👤 R Berkman
- 👤 D Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:02
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |