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| Number | Title | Issue Date |
| 4632807 | Optical sensor for fluorescence measurements In an optical sensor used mainly for determining the partial pressure of O2 or CO2 in respiratory gas includes a sample measuring chamber through which sample medium to be analyzed flows or into which it is fed, a reference measuring... | 12/30/1986 |
| 4626513 | Method and apparatus for ligand detection A process and apparatus has been developed for radioassay of ligand in solution which eliminates the separation step required in conventional techniques. A chamber is provided containing a quenching solution, a plurality of ligand molecules and a pluralit... | 12/02/1986 |
| 4582809 | Apparatus including optical fiber for fluorescence immunoassay A method and apparatus for fluorescent immunoassay utilizes total internal reflection at the interface between a solid phase and a liquid phase of lower index of refraction to produce an evanescent wave in the liquid phase. The solid phase is arranged and... | 04/15/1986 |
| 4562045 | Carrier for holding analytical samples A carrier which is used when a solution, as an analytical sample, is analyzed by X-ray fluorometry. The carrier comprises a medium having a central region with a plurality of alternate slits and support connections, each support connection defined between... | 12/31/1985 |
| 4559299 | Cytotoxicity assays in cell culturing devices Methods and devices for assaying the sensitivity of of biopsied cells to therapeutic agents are disclosed. Cells are cultured in artificial organs and then contacted with a fluorogenic substrate such that living cells accumulate a characteristic amount of... | 12/17/1985 |
| 4539180 | Apparatus for quantitatively determining the level of hemoglobin in a biological sample A method of quantitatively determining the level of hemoglobin in a biological material which includes the steps of preparing a test sample of the biological material, converting the heme portion of the hemoglobin in the test sample to porphyrin, assaying... | 09/03/1985 |
| 4529495 | Measuring set-up with at least one sensor Between a substance to be analyzed and a sensor there is placed at least one membrane, forming part of a sample vessel containing a sample to be analyzed and being permeable for a species depending on the substance to be analyzed. This membrane constitute... | 07/16/1985 |
| 4499052 | Apparatus for distinguishing multiple subpopulations of cells A method of distinguishing multiple subpopulations of cells from a single sample of cells of a variety of types comprises labeling particles with two or more marking agents. These particles are marked in a plurality of different pre-selected ratios of the... | 02/12/1985 |
| 4396579 | Luminescence detection device A luminescence detection device for quantitatively detecting an analyte in a liquid sample, which device comprises (1) a reaction compartment having, along a primary axis, opposite end portions, a first of which is for introduction of fluid reagents and s... | 08/02/1983 |
| 4352780 | Device for controlled injection of fluids A device for flow injection analysis wherein use is made of a double loop connected at opposite ends with flow control valves for alternate simultaneous injection of sample fluid in one loop while electrolyte fluid is injected in the other and for simulta... | 10/05/1982 |
| 4321057 | Method for quantitative analysis using optical fibers A method and apparatus for chemical and biochemical analyses which employ an energy-transmissive core and may employ one or more sheaths which selectively absorb, react with, and/or filter an analyte or a product of an analyte. The core is transmissive to... | 03/23/1982 |
| 4076420 | Apparatus for investigating fast chemical reactions by optical detection A reaction kinetics measuring system which provides for the application of great variety of reaction initiating methods, as temperature or pressure or electrical field jump methods, mixing methods, flash photolysis method, and combinations of said methods... | 02/28/1978 |
| 4071020 | Apparatus and methods for performing in-vivo measurements of enzyme activity There are disclosed apparatus and methods for performing in-vivo measurements of enzyme kinetics on the epidermis and mucous membranes of a subject. One or more reactants are placed on a predetermined area of the skin in order to react with the enzyme or ... | 01/31/1978 |
| 4059405 | Method and apparatus for analysis of constituent carried in fibrous medium An optically-thin preparation of a sample solution and chemical reagents produces a constituent-manifesting reaction product that can be measured in linear relation to the concentration of the constituent of interest. A fibrous sheet contains the sample a... | 11/22/1977 |
| 3937614 | Apparatus for monitoring the rate of a chemical reaction A press for compressing a liquid-bearing absorbent article to transfer a portion of the liquid materials to a contiguous article has two concentric pressure feet. One is an outer foot member that bears against the liquid-bearing article along the peripher... | 02/10/1976 |
