US3609040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automated system for performing sample measurements, dilutions and photometric measurements
Assignee: Eli Lilly and Co
•
Filing: 1969-02-24
•
Granted: 1971-09-28
•
Expires: 1989-02-24
Abstract
Abstract An automatic diluter and photometric reader adapted for use in the turbidimetric microbiological assays of antibiotics, vitamins, and the like, as well as in various other analytical assays.
Inventors
- 👤 Norbert R Kuzel
- 👤 Frederick W Kavanagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:08
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/38; G01N35/00; G01N35/02; G01N35/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
29 words
In a photometric reader the improvement in accordance with claim 1 in which said sample withdrawal means comprises a reciprocable probe means for successive entry into said sample receptacles.
Claim 2
Dependent Claim
29 words
In a photometric reader the improvement in accordance with claim 2 in which the conveying means for said individual receptacles is synchronized with movement of said sample withdrawal means.
Claim 3
Dependent Claim
19 words
In a photometric reader the improvement in accordance with claim 3 including a solenoid for actuating the valve means.
Claim 4
Dependent Claim
21 words
In a photometric reader the improvement in accordance with claim 4 in which the pressure differential means comprises a vacuum system.
Claim 5
Dependent Claim
33 words
In a photometric reader the improvement in accordance with claim 4 in which the pressure differential means comprises means for effecting flow of the sample at a rate of at least 0.8 ml./sec.
References Cited (Backward Citations)
US2037213A
Cited
US3241432A
Cited
US3225645A
Cited
US3418053A
Cited
US3516752A
Cited
US3475128A
Cited
US3484170A
Cited
US3478598A
Cited
US3448277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |