Eppink
Jay M. Eppink, Spring, TX US
Patent application number | Description | Published |
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20140262650 | ROTARY SHOCK ABSORPTION TOOL - Apparatuses, tools, assemblies, and methods are disclosed for reducing vibration. A shock absorption apparatus may include a stator and a rotor inside the stator. A first piston section may be included and define a first piston chamber having a first piston therein. The first piston chamber may be fluidly coupled to a first end portion of an annulus defined in a region between the stator and the rotor. A second piston section may also be defined and may include a second piston chamber with a second piston therein. The second piston chamber may be fluidly coupled to a second end portion of the annulus. | 09-18-2014 |
20150368985 | Mud Motor Bearing Pack Lower End With Catch Ring - It is desirable to secure a lower end of a down hole assembly in the event of a down hole failure, such as a fractured drive shaft, enabling recovery of the bottom hole assembly and drill bit. To secure the lower end of the down hole assembly, a catch apparatus according to embodiments herein may be used, the catch apparatus including a rotating bearing having a distal end threadably coupled to a distal portion of a drive shaft. The apparatus may also include a stationary bearing having a proximal end threadably coupled to a distal end of an outer housing. A catch ring may be threadably coupled to a proximal end of the rotating bearing, the catch ring having a shoulder radially overlapping a shoulder of the stationary bearing. | 12-24-2015 |
Jay Milton Eppink, Spring, TX US
Michel Hendrikus Maria Eppink US
Patent application number | Description | Published |
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20130150553 | METHOD FOR PROTEIN ISOLATION IN ANOXIC CONDITIONS - The present invention relates to a method for the isolation of proteins that comprise disulfide bonds in their native conformation. Essentially, a method of the present invention makes use of reducing agents such as β-mercaptoethanol or dithiothreitol in protein isolation methods obsolete. A method of the present invention is particularly suitable for the isolation of precursor proteins such as proinsulin from recombinant cells. | 06-13-2013 |
Michel Hendrikus Maria Eppink, Oss NL
Patent application number | Description | Published |
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20140323687 | METHOD FOR PROTEIN ISOLATION IN ANOXIC CONDITIONS - The present invention relates to a method for the isolation of proteins that comprise disulfide-bonds in their native conformation. Essentially, a method of the present makes the use of reducing agents such as β-mercaptoethanol or dithiothreitol in protein isolation methods obsolete. A method of the present invention is particularly suitable for the isolation of precursor proteins such as proinsulin from recombinant cells. | 10-30-2014 |
Michel Hendrikus Maria Eppink, Nijmegen NL
Patent application number | Description | Published |
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20160002289 | METHOD OF PURIFYING AN ANTIBODY - A method of purifying an antibody composition comprises application of anion exchange chromatography late in the purification process. An ultrafiltration/diafiltration-purified antibody composition is subjected to anion exchange chromatography (AEX) to form a pharmaceutically-pure antibody composition. | 01-07-2016 |