Class / Patent application number | Description | Number of patent applications / Date published |
422820060 | Optode or optrode | 6 |
20080199360 | Method and composition for a platinum embedded sol gel optical chemical sensor with improved sensitivity and chemical stability - A process for manufacturing a material, (medium or matrix) to hold or encapsulate sensing molecules with enhanced sensitivity to oxygen gas and dissolved oxygen by mixing a platinum compound with sol-gel monomers and then coating the tip of an optical fiber is disclosed. The sol-gel polymerizes, trapping the platinum compound in an oxygen permeable glass like solid. The high quenching efficiency of the Pt compound upon oxygen exposure makes the sensor extremely sensitive to oxygen partial pressure variations and also resistant to exposure to hydrocarbons. | 08-21-2008 |
20100178208 | OPTICAL SENSOR ARRAY SYSTEM FOR PARALLEL PROCESSING OF CHEMICAL AND BIOCHEMICAL INFORMATION - Total analysis systems and methods for simultaneously monitoring a suite of biological and/or chemical species in water and/or other process systems are disclosed. The system provides a sample-volume controlled sensor array comprising a fluid delivery device and a plurality of optical sensor elements for determining the presence and total concentrations of multiple analytes in the process system simultaneously. Image identification algorithms are provided for identifying the analytes based on image intensity, color pattern, positional arrangement, and the like. The methods incorporate multivariate optimization algorithms to analyze multiple sensor responses. This produces analytical results that are typically difficult to obtain without full system or variable compensation. The improved array response may then be utilized to measure, monitor, and control the concentration of analytes in the chemical or biological sample or water system. | 07-15-2010 |
20110064617 | ELECTRO-OPTICAL SENSING DEVICE WITH REFERENCE CHANNEL - An electro-optical sensing device for detecting the presence and concentration of an analyte in a liquid or gaseous medium includes a pair of indicator elements positioned to receive radiation from a radiation source and transmit radiation to a pair of photosensitive elements. The indicator elements each contain indicator molecules having an optical characteristic responsive to the presence of an analyte; however, one of the indicator elements is covered by an analyte-impermeable chamber that renders the indicator element insensitive to the presence of the analyte in the medium outside the chamber so that it can be used as a reference to cancel environmental and systemic variables that affect both indicator elements. The chamber preferably holds an analyte-containing fluid in contact with the reference indicator element so that the indicator elements operate under nominally identical conditions. The indicator element used to measure the analyte in the external medium is preferably also covered, but in a manner that provides direct contact between the analyte and the indicator element. | 03-17-2011 |
422820070 | Fluorescence | 3 |
20110236264 | MICROFLUIDIC DEVICE FOR SEPARATING AND SORTING PARTICLES IN A FLUID MEDIUM - A microfluidic device for separating emulsion solution into separate particles by passing the emulsion solution through a passive filter. The separated particles can then be sorted into separate chambers through active filtering. | 09-29-2011 |
20150125347 | DISSOLVED OXYGEN SENSOR - Embodiments of a dissolved oxygen sensor are disclosed herein. Embodiments as disclosed herein may include a window of optically transparent material disposed in an opening in a fluid flow path, where a luminophor is attached to the side of the window exposed to the fluid in the flow path. An optical probe may be disposed opposite the window from the fluid flow path on an axis at an angle to the window fluid flow path. The optical probe includes an excitation light source for illumination of the luminophor and a reference light source. An optical reception guide is configured to conduct light from the luminophor to a photodiode adjacent to the end of the optical reception guide distal the window when the luminophor is illuminated by the excitation light source. The optical probe is configured to determine a measure of oxygen concentration of the fluid in the flow path. The optical reception guide and photodiode may be aligned on axis, where the axis may be substantially parallel with the axis on which the optical probe is aligned. | 05-07-2015 |
20150147231 | OPTOCHEMICAL SENSOR - The invention relates to an optochemical sensor comprising a polymer matrix which is applied to a substrate and which is doped with a luminescent colorant, the emissivity of which can be modified after excitation with electromagnetic radiation by substances to be detected such as gaseous or dissolved O | 05-28-2015 |