Friedersdorf, US
Chris B. Friedersdorf, Kingwood, TX US
Patent application number | Description | Published |
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20110172337 | Processes and Apparatus for Continuous Solution Polymerization - The disclosure provides a plant for the continuous solution polymerization of a feed comprising one or more olefin monomers in a solvent, e.g., hydrocarbon solvent, in which the plant comprises means for separating solvent from the polymer including a flash tank and a vacuum devolatilizer. The plant also includes in a first aspect stabilizer addition means for adding a stabilizer to the concentrated polymer fines at a location downstream of the flash and upstream of the vacuum devolatilizer. In another aspect the plant comprises means to add a molten stabilizer to the polymer at a location downstream of the reactors. | 07-14-2011 |
20110313115 | PHASE SEPARATOR AND MONOMER RECYCLE FOR SUPERCRITICAL POLYMERIZATION PROCESS - This invention relates to a process for polymerizing olefins, comprising the steps of: | 12-22-2011 |
20150073106 | Processes and Apparatus for Continuous Solution Polymerization - This invention relates to a blocked process for producing polymers of high and low molecular weights utilizing the same polymer separator. The separator is operated in a different mode depending on the molecular weight of the polymer being produced such that the separation system is operated in flash mode for the separation of low molecular weight polymers and operated in lower critical solution temperature (LCST) mode for the separation of high molecular weight polymers. | 03-12-2015 |
Fritz J. Friedersdorf, Earlysville, VA US
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20080204275 | WIRELESS CORROSION SENSOR - A passive sensor that is located on or adjacent to a structure that can be used to monitor the affect of environment on a structure or coating that is used to protect the structure. The sensor includes a parasitic element that interacts with the environment and influences the intensity of the electromagnetic response between the inductive element of the sensor and the antenna of the interrogation reader device. The condition of the parasitic element is determined by the radio frequency interaction of the reader antenna and the inductive element of the sensor. The parasitic element condition correlates to the environmental severity, or corrosivity of the environment and damage to metallic structures or protective coatings. An integrated circuit within the sensor is capable of storing identification, time, material, and measurement information. The sensor and system of the present invention is useful for tracking and monitoring cumulate environmental damage to a structure. | 08-28-2008 |
20100192679 | SYSTEMS AND METHODS TO DETECT PARTICULATE DEBRIS IN A FLUID - Methods and systems are provided for detecting presence of a target particulate of predetermined size (e.g., engine wear debris) in a fluid (e.g., an engine lubricant) by providing at least one pair of serially fluid-connected upstream test and downstream reference filtration elements in the fluid. At least the upstream test filtration element has a filtration size rating that is sufficient to remove a predetermined amount of the target particulate from the fluid. The differential pressure of the fluid may then be measured (e.g., by suitable pressure transducers) across each of the test and reference filtration elements. By comparing the differential pressure across the test filtration element to the differential pressure across reference filtration element, the presence of the target particulate in the fluid can thereby be detected by an increase in differential pressure across the test filtration element in comparison to the differential pressure across the reference filtration element. The methods and systems of the invention thus allow for the detection of target particulates that is independent of the fluid flow rate and/or temperature (viscosity, density). | 08-05-2010 |
20110100131 | IN-SITU SENSORS AND METHODS FOR MONITORING ENVIRONMENT ASSISTED CRACKING OF STRUCTURAL COMPONENTS - Sensor assemblies, units and methods are provided to determine crack development of components of interest associated with a monitored structure. According to preferred embodiments, a sample sensor bolt is provided having a shank with a threaded end, the sensor bolt being formed of a material serving as a surrogate of the material forming a component of interest associated with the monitored structure. A frame surrounds the shank of the sensor bolt and has fluid ports therein to allow fluid to contact an exposed portion of the sensor bolt shank in registry therewith. A load cell is operatively connected to the sensor bolt. A pre-load nut is threaded onto the threaded end of the sensor bolt shank and contacts an end of the frame so as to place the sensor bolt under an initial tensile stress. Crack formation within the sensor bolt shank caused by fluid acting upon the exposed portion thereof responsively relieves the initial tensile stress of the sensor bolt which is thereby sensed by the load cell, whereby crack formation in the shank can be used to sense the propensity for crack development in the component of interest associated with the monitored structure. | 05-05-2011 |
Fritz John Friedersdorf, Earlysville, VA US
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20150268152 | SENSING SYSTEMS AND METHODS FOR DETERMINING AND CLASSIFYING CORROSIVITY - A corrosivity associated with each of multiple locations near, on, or within a structure exposed to an environment that can corrode the structure is determined. Each of multiple sensor nodes is mounted at a corresponding one of the locations and measures environmental sensor information using one or more environmental sensors and corrosion sensor information using one or more corrosion sensors. The environmental sensor information is processed to obtain for the sensing node a first atmospheric corrosivity category value in accordance with a corrosivity classification system, and the corrosion sensor information is processed to obtain a second atmospheric corrosivity category value for the sensing node in accordance with the corrosivity classification system. One or more of the first and second atmospheric corrosivity category values is provided for use in determining a corrosion classification value for each of the locations. | 09-24-2015 |
Fritz John Friedersdorf, Roanoke, VA US
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20150377814 | APPARATUS, SYSTEMS AND METHODS FOR LOCAL ON SITE MEASUREMENT OF CORROSION CONDITION INFORMATION WITH CONTACTLESS ELECTRODES - A sensing device includes a pair of contactless electrodes for placement on a coating on a surface of a structure or within or between one or more coatings on or over the surface of the structure. The electrodes function as sensors when activated to generate a current flow through the electrodes at multiple different frequencies. The sensing device also includes contactless control circuitry co-located with or separate from the electrodes that transmits impedance data generated from the activated electrodes. The impedance data is associated with corrosion condition information of the structure and/or the one or more coatings. A data collection system and display system useable with the sensing device are also described. | 12-31-2015 |