US3294490A
Expired / Lapsed
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Assignee: Hach Co
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Filing: 1963-03-25
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Granted: 1966-12-27
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Hach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:05
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/18; G01N33/1853; G01N1/00; G01N1/28; G01N1/38; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN AN ANALYZER, APPARATUS FOR MIXING A FLUID REAGENT WITH A LESS DENSE FLUID SAMPLE IN CONTROLLED PROPORTIONS COMPRISING, IN COMBINATION, A MIXING BODY HAVING A BOTTOM APERTURE ENCLOSED BY A WALL DEFINING A SAMPLE RESERVOIR OF FIXED HEAD RELATIVE TO THE APERTURE, MEANS FOR SUPPLYING A FLUID SAMPLE TO SAID RESERVOIR AT A RATE GREATER THAN THE FLOW RATE THROUGH SAID APERTURE, SAID BODY INCLUDING A TROUGH TO COLLECT AND DISCHARGE THE FLUID SAMPLE WHICH SPILLS OVER SAID WALL, A REAGENT CONTAINER POSITIONED ABOVE SAID MIXING BODY, AND A CAPILLARY TUBE HAVING A FLUID CONNECTION WITH SAID CONTAINER AND EXTENDING DOWN INTO THE FLUID SAMPLE IN SAID RESERVOIR SO THAT THE LOWER END OF THE TUBE OVERLIES SAID APERTURE.
Claim 2
Dependent Claim
120 words
IN AN ANALYZER, APPARATUS FOR MIXING A FLUID REAGENT WITH A LESS DENSE FLUID SAMPLE IN CONTROLLED PROPORTIONS COMPRISING, IN COMBINATION, A MIXING BODY HAVING A BOTTOM APERTURE ENCLOSED BY A WALL DEFINING A SAMPLE RESERVOIR OF FIXED HEAD RELATIVE TO THE APERTURE, MEANS FOR SUPPLYING A FLUID SAMPLE TO SAID RESERVOIR AT A RATE GREATER THAN THE FLOW RATE THROUGH SAID APERTURE, SAID BODY INCLUDING A TROUGH TO COLLECT AND DISCHARGE THE FLUID SAMPLE WHICH SPILLS OVER SAID WALL, A REAGENT CONTAINER POSITIONED ABOVE SAID MIXING BODY, AND A CAPILLARY TUBE HAVING A FLUID CONNECTION WITH SAID CONTAINER AND EXTENDING DOWN INTO THE FLUID SAMPLE IN SAID RESERVOIR SO THAT THE LOWER END OF THE TUBE OVERLIES SAID APERTURE.
References Cited (Backward Citations)
US659494A
Cited
US673465A
Cited
US679612A
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US1602705A
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US2297311A
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US2980512A
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US3026182A
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US3186799A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |