Renkema
Duurt Renkema, Amsterdam NL
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20090012342 | Process to prepare a haze free base oil - Process for reducing the cloud point of a base oil having a kinematic viscosity at 100° C. of greater than 10 cSt by separating the molecules inferring the high cloud point from the base oil by means of a membrane separation wherein the feed is separated into a a permeate as the base oil having the reduced cloud point and a retentate. | 01-08-2009 |
20110247964 | PROCESS FOR REMOVING ASPHALTENIC PARTICLES - Process for removing asphaltenic particles from a hydrocarbon feed containing asphaltenic particles by treating the feed in a filter unit comprising a perforated tube surrounded by hollow longitudinal projections comprising a filter having openings of at most 50 micrometer diameter in which the internal space of each of the hollow projections is in fluid communication with the inside of the perforated tube and which filter is regularly subjected to cleaning by treating each of the projections with cleaning fluid wherein the flow of cleaning fluid is opposite to the direction of normal flow. | 10-13-2011 |
Eilertdina Henderika Renkema, Renkum NL
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20120004432 | PROCESS FOR THE CATALYTIC HALOGENATION OF A DIOL - The present invention relates to a process for the catalytic halogenation of an organic compound comprising at least one vicinal diol moiety, said process comprising a step of bringing the organic compound comprising at least one vicinal diol moiety into contact with a hydrogen halide in the presence of a catalyst, characterized in that the catalyst is an organic compound comprising a β-diketone moiety or a β-keto aldehyde moiety. | 01-05-2012 |
20120108856 | PROCESS FOR PREPARING DICHLOROHYDRIN - The invention relates to a process wherein a stream comprising dichlorohydrin, water, and HCI is separated into a stream which is rich in dichlorohydrin and low in HCI and an aqueous HCI stream which is low in dichlorohydrin. The process involves the distillation of the mixture comprising dichlorohydrin, water, and HCI with an amount of water being added before and/or during the distillation such that the water concentration during the distillation is on the line D-E, or to the right thereof, in the phase diagram of FIG. | 05-03-2012 |
20140371492 | PROCESS FOR THE CHLORINATION OF A HYDROXYLATED ORGANIC COMPOUND - Process for the chlorination of an organic compound comprising at least one aliphatic hydroxyl group, said process comprising the steps of actively adding to said organic compound (i) hydrogen chloride and (ii) a HCl desolubilizer or a precursor thereof, and heating the resulting mixture at a reaction temperature in the range 20°-160° C., wherein said chlorination is performed in the presence of a catalyst selected from the group consisting of (a) ketones, (b) aldehydes, (c) carboxylic acids with 1-8 carbon atoms, (d) organic compounds comprising a β-diketone moiety or a β-keto aldehyde moiety, and (e) organic polymers comprising at least one carbonyl group, having a vapour pressure at the reaction temperature of less than 1 mbar, a weight average molecular weight M | 12-18-2014 |
Kornelis Renkema, Eindhoven NL
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20080225403 | Variable Focus Lens Package Having Clamping Means For Fixing the Various Lens Package Elements With Respect to Each Other - A variable focus lens package ( | 09-18-2008 |
Loren B. Renkema, Wyoming, MI US
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20100213736 | VEHICLE ACCESSORY SYSTEM - A mirror assembly includes a reflective element portion and a molded portion formed of a multi-void, lightweight structure. The multi-void, lightweight structure may be formed by injecting a gas into an injection mold while the molded portion is being molded, resulting in a multi-void aerated molded structure having multiple-voids introduced during the molding step. A window assembly for a vehicle may include an outer frame portion, an inner frame portion hingedly attached to the outer frame portion, and at least one sealing element established along a sealing portion of the outer and/or inner frame portions. The outer frame portion may be pivoted relative to the inner frame portion and about the hinge portions to a closed position. The outer frame portion may be connected to the inner frame portion when in the closed position to secure the at least one sealing element therebetween. | 08-26-2010 |
Michael Renkema, North Shore City NZ
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20150067142 | AGGREGATION OF METRICS FOR TRACKING ELECTRONIC COMPUTING RESOURCES BASED ON USER CLASS HIERARCHY - An improved technique involves collecting data from a hosting environment that provides access to electronic computing resources and computing aggregated metrics from the data for a particular level of a user class hierarchy by aggregating metric values collected for subordinate levels of the user class hierarchy. Along these lines, a tracking server, upon receiving resource usage data, arranges the data in entries having values of metrics that describe some attribute related to resource usage and pertaining to a user class hierarchy. For a given level of the user class hierarchy, the tracking server performs an aggregation operation (e.g., a summation) of metric values over entries pertaining to subordinate levels of the user class hierarchy. The tracking server stores the result of the aggregation operation in an aggregation table for future report generation. | 03-05-2015 |
Steffen Renkema, Bretten DE
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20100012110 | AIR-CIRCULATING MODULE AND FUME EXTRACTION DEVICE - An air-circulator includes an housing with an air inlet, an air outlet opening, an odor filter, and an insertion opening for inserting the odor filter. The odor filter is assigned to the air outlet opening. | 01-21-2010 |