Alkema
Duurt Pieter Willem Alkema, Den Haag NL
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20090080851 | Radiation curable coating composition for optical fiber with reduced attenuation loss - The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: | 03-26-2009 |
20130046260 | DISINFECTING WOUND DRESSING AND PROCESS FOR PREPARING SUCH - The invention relates to a process for preparing a disinfecting wound dressing for the protection of wounds, such as burn wounds, ulcers and cuts. The process comprises the steps of providing a yarn-based substrate, subjecting a surface of the substrate to a plasma environment, thereby providing non-leaching and biocidal features to the substrate surface by exposing the substrate surface to an antimicrobial active compound reaction. | 02-21-2013 |
20140163132 | RADIATION CURABLE COATING COMPOSITION FOR OPTICAL FIBER WITH REDUCED ATTENUATION LOSS - The present invention relates to a radiation curable coating composition comprising a radiation curable oligomer comprising a backbone derived from polypropylene glycol and a dimer acid based polyester polyol, wherein said coating composition, when cured, is having: | 06-12-2014 |
Michael Alkema, Sahuarita, AZ US
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20120181373 | PROJECTILE AND METHOD THAT INCLUDE SPEED ADJUSTING GUIDANCE AND PROPULSION SYSTEMS - Some embodiments pertain to a projectile and method that includes a flight vehicle and a propulsion system attached to the flight vehicle. The propulsion system includes a plurality of motors that propel the projectile. A guidance system is connected to the propulsion system. The guidance system ignites an appropriate number of the motors to adjust the speed of the projectile based on the location of the projectile relative to a desired destination for the flight vehicle. In some embodiments, the flight vehicle is a kinetic warhead. The projectile may be an interceptor that includes a first propulsion stage, a second propulsion stage and a third propulsion stage that includes the third propulsion system. The number of booster motors that will be ignited by the guidance system depends on the speed that the projectile needs to be adjusted to in order to maneuver the projectile to a desired location. | 07-19-2012 |
Michael S. Alkema, Sahuarita, AZ US
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20140138475 | ROCKET PROPELLED PAYLOAD WITH DIVERT CONTROL SYSTEM WITHIN NOSE CONE - A rocket is provided and includes booster stages at a rear of the nose cone, the booster stages being configured for propelling the nose cone in a propulsion direction and a divert control system housed entirely in the nose cone for controlling an orientation of the propulsion direction. | 05-22-2014 |
Sjoerd Alkema, Delfzil NL
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20140183098 | PREPARATION OF CATALYST - A process for preparing a hydrocarbon conversion catalyst that comprises a specially made silica-alumina composition and a metal or metal compound selected from Group VIB and Group VIII metals. The silica-alumina composition is made by preparing an aqueous mixture containing aluminum sulfate followed by adding alkali metal aluminate to the mixture to inhance the pH to within specified range and then adding aluminum sulfate to the mixture to lower the pH. Then alkali metal silicate is added followed by several other pH swings to provide a mixture containing silica-alumina. The resulting mixture is treated with an alkaline solution to provide a precipitate solid that is recovered to obtain a silica-alumina composition containing of from 30 to 70% wt silica and of from 70 to 30% wt of alumina. | 07-03-2014 |
Sjoerd Alkema, Delfzijl NL
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20140187411 | PREPARATION OF SILICA-ALUMINA COMPOSITION - A process for preparing a silica-alumina composition containing of from 30 to 70% wt silica and of from 70 to 30% wt of alumina, which process comprises (a) preparing an aqueous mixture containing aluminum sulfate and having a pH in the range of from 1.0 to 6.5; (b) adding alkali metal aluminate to the mixture obtained in step (a) to increase the pH of the mixture to within the range of from 7.1 to 12; | 07-03-2014 |