US2995425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuously colorimetrically analyzing fluids for chemical components
Assignee: S L F ENGINEERING Co
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Filing: 1958-12-18
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Granted: 1961-08-08
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Expires: 1978-12-18
Abstract
No abstract record available.
Inventors
- 👤 Fuhrmann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:38
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
APPARATUS FOR CONTINUOUS COLORIMETRIC ANALYSIS OF FLUIDS FOR CHEMICAL CONSTITUENTS COMPRISING A HOUSING, A MIXING CHAMBER IN SAID HOUSING, AN OPTICAL MEASURING CHAMBER IN SAID HOUSING IN COMMUNICATION WITH SAID MIXING CHAMBER, MEANS FOR INTRODUCING A SAMPLE FLUID INTO SAID MIXING CHAMBER, A CHEMICAL REAGENT CHAMBER OPENING INTO SAID MIXING CHAMBER, FLUID PERVIOUS MEANS MOUNTED AT THE REAGENT CHAMBER OPENING ADJACENT THE MIXING CHAMBER AND IN CONTACT WITH FLUID IN SAID MIXING CHAMBER, AND A FLUID SOLUBLE SOLID REAGENT ROD IN CONTACT WITH AND SUPPORTED BY SAID FLUID PERVIOUS MEANS, REAGENT BEING INTRODUCED INTO SAID SAMPLE FLUID IN SAID MIXING CHAMBER BY DIFFUSION THROUGH SAID FLUID PERVIOUS MEANS.
Claim 2
Dependent Claim
108 words
APPARATUS FOR CONTINUOUS COLORIMETRIC ANALYSIS OF FLUIDS FOR CHEMICAL CONSTITUENTS COMPRISING A HOUSING, A MIXING CHAMBER IN SAID HOUSING, AN OPTICAL MEASURING CHAMBER IN SAID HOUSING IN COMMUNICATION WITH SAID MIXING CHAMBER, MEANS FOR INTRODUCING A SAMPLE FLUID INTO SAID MIXING CHAMBER, A CHEMICAL REAGENT CHAMBER OPENING INTO SAID MIXING CHAMBER, FLUID PERVIOUS MEANS MOUNTED AT THE REAGENT CHAMBER OPENING ADJACENT THE MIXING CHAMBER AND IN CONTACT WITH FLUID IN SAID MIXING CHAMBER, AND A FLUID SOLUBLE SOLID REAGENT ROD IN CONTACT WITH AND SUPPORTED BY SAID FLUID PERVIOUS MEANS, REAGENT BEING INTRODUCED INTO SAID SAMPLE FLUID IN SAID MIXING CHAMBER BY DIFFUSION THROUGH SAID FLUID PERVIOUS MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |