Steenkamp
Casper Jan-Theo Steenkamp, Saskatoon CA
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20080197962 | MULTIPLE-PRIMARY HIGH FREQUENCY TRANSFORMER INVERTER - A transformer based inverter system comprises a transformer core, a secondary winding wound around the transformer core, a plurality of primary winding circuits each comprising a clockwise or counterclockwise winding wound around the transformer core and a switch operative to selectively open and close to allow current to flow through the winding. Each primary winding circuit is connected to terminals of a DC generator to drive current around the transformer core in a clockwise or counterclockwise direction. A control system is operative to open and close the switches such that an input DC voltage from a generator is transformed and inverted into an AC voltage that has a frequency and voltage equal to a desired frequency and voltage, and such that as the input DC voltage varies within a range, the AC voltage at the terminal ends of the secondary winding remains substantially constant. | 08-21-2008 |
Daniel Steenkamp, Abbotsford CA
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20140353045 | DRILL PIPE WITH REPLACEABLE TOOL JOINTS - A drill string including tool assembly. The tool assembly includes a tool joint adapter and a tool joint coupled to the tool joint adapter through a faceted pin. The faceted pin includes a faceted fitting having a fitting face. The drill string includes a locking pin that extends through the tool joint adapter and tool joint. The locking pin extends through a locking pin groove of the fitting face. The locking pin locks the tool joint adapter and tool joint together. | 12-04-2014 |
Lucia H. Steenkamp, Boksburg ZA
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20080280348 | Method for Converting Aloeresin a to Aloesin - The invention provides a process for hydrolytically converting aloeresin A to aloesin by the following reaction: The amount of aloesin available for extraction from sap of aloe plants is thereby increased and the extraction and purification of the aloesin is also made easier and less costly. As aloesin is more commercially valuable than aloeresin A, the process also increases the commercial value of the sap or aloe bitters from the aloe plant. The process optionally also includes the step of separating the aloesin from the p-coumaric acid. Typical hydrolysis steps that are used in the process are acid hydrolysis, base hydrolysis and enzymatic hydrolysis. In the case of acid hydrolysis, the acid is any suitable organic or inorganic acid, such as hydrochloric acid, sulfuric acid, nitric acid or phosphoric acid. In the case of enzymatic hydrolysis, the hydrolytic enzyme is typically an esterase, a lipase or a protease. | 11-13-2008 |
20090087829 | PRODUCTION OF MONATIN ENANTIOMERS - Methods for preferentially hydrolyzing one stereoisomer of an isoxazoline diester over another, as well as an enzyme for facilitating the preferential hydrolysis are provided. Also provided are methods for providing mixtures of (RR) and (RS) monatin as well as (SS) and (SR) monatin, which methods can include the step of stereoselectively hydrolyzing an isoxazoline diester. | 04-02-2009 |
20100248316 | Process for the Production of Ambrafuran - A method for the cyclodehydration of a 1,4- or 1,5-diol includes the step of exposing a 1,4- or a 1,5-diol to an activated zeolite at a temperature of between about 0° C. and about 110° C. for a period of between about 1 and 24 hours. The activated zeolite is prepared from an inactive NaY or CaY type zeolite by ion exchange with an ammonium salt, to produce an ammonium zeolite and exchange of at least part of the ammonia of the ammonium zeolate with a group II A metal. | 09-30-2010 |
20110300282 | PRODUCTION OF MONATIN ENANTIOMERS - Methods for preferentially hydrolyzing one stereoisomer of an isoxazoline diester over another, as well as an enzyme for facilitating the preferential hydrolysis are provided. Also provided are methods for providing mixtures of (RR) and (RS) monatin as well as (SS) and (SR) monatin, which methods can include the step of stereoselectively hydrolyzing an isoxazoline diester. | 12-08-2011 |
Paul A. Steenkamp, Boksburg ZA
Patent application number | Description | Published |
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20090087829 | PRODUCTION OF MONATIN ENANTIOMERS - Methods for preferentially hydrolyzing one stereoisomer of an isoxazoline diester over another, as well as an enzyme for facilitating the preferential hydrolysis are provided. Also provided are methods for providing mixtures of (RR) and (RS) monatin as well as (SS) and (SR) monatin, which methods can include the step of stereoselectively hydrolyzing an isoxazoline diester. | 04-02-2009 |
20110300282 | PRODUCTION OF MONATIN ENANTIOMERS - Methods for preferentially hydrolyzing one stereoisomer of an isoxazoline diester over another, as well as an enzyme for facilitating the preferential hydrolysis are provided. Also provided are methods for providing mixtures of (RR) and (RS) monatin as well as (SS) and (SR) monatin, which methods can include the step of stereoselectively hydrolyzing an isoxazoline diester. | 12-08-2011 |
Shane Cameron Steenkamp, Draper, UT US
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20150071456 | SYSTEM AND METHOD FOR ILLUMINATING A HEADPHONE TO INDICATE VOLUME AND/OR BEAT - A system, apparatus and method for illuminating a headphone to indicate the volume and/or rhythm of an audio signal emitting from the headphone through a flashing illuminated pattern of light emitting diodes visible to an observer. The pattern and synchronization of the illumination pattern provides an instantaneous, graphical indication of the volume, rhythm, intensity, and frequency of the audio signal. The invention includes a headphone. A plurality of light emitting diodes (LEDs) operably attach to the headphone(s). The LEDs form a pattern in, or on, the headphone(s) that is efficacious for prominently displaying the illumination. Various pattern shapes can be utilized. The illumination produced by the LEDs is efficacious for signaling the different variances of the audio signal. A USB cable may provides power and data signals for the headphone(s). A battery may provide power. A heat sink helps dissipate heat from the LEDs. | 03-12-2015 |