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Lourens
P.g. Lourens, Cape Town ZA
| Patent application number | Description | Published |
|---|---|---|
| 20100021990 | HIGH THROUGHPUT BIOPROCESS APPARATUS - The invention relates to a multiple bioreactor system comprising a plurality of bioreactors, a source of pressurised fluid, and distribution means for distributing the fluid to the bioreactors, wherein the bioreactor system includes backpressure creating means presented by, before or after each bioreactor and the source of pressurised fluid such that each backpressure creating means provides a resistance to the flow of the pressurised fluid which is greater than the resistance to flow between each backpressure creating means. The invention further relates to A method of operating a multiple bioreactor system comprising providing a plurality of bioreactors, a source of pressurised fluid, and distribution means for distributing the fluid to the bioreactors, wherein the bioreactor system includes backpressure creating means presented by each bioreactor or located between each bioreactor and the source of pressurised fluid such that each backpressure creating means provides a resistance to the flow of the pressurised fluid which is greater than the resistance to flow between each backpressure creating means and operating the system. | 01-28-2010 |
P. G. Lourens, Cape Town ZA
| Patent application number | Description | Published |
|---|---|---|
| 20120064583 | HIGH THROUGHPUT BIOPROCESS APPARATUS - The invention relates to a multiple bioreactor system comprising a plurality of bioreactors, a source of pressurised fluid, and distribution means for distributing the fluid to the bioreactors, wherein the bioreactor system includes backpressure creating means presented by, before or after each bioreactor and the source of pressurised fluid such that each backpressure creating means provides a resistance to the flow of the pressurised fluid which is greater than the resistance to flow between each backpressure creating means. The invention further relates to A method of operating a multiple bioreactor system comprising providing a plurality of bioreactors, a source of pressurised fluid, and distribution means for distributing the fluid to the bioreactors, wherein the bioreactor system includes backpressure creating means presented by each bioreactor or located between each bioreactor and the source of pressurised fluid such that each backpressure creating means provides a resistance to the flow of the pressurised fluid which is greater than the resistance to flow between each backpressure creating means and operating the system. | 03-15-2012 |
Ruan Lourens, Volente, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080273391 | Regulator Bypass Start-Up in an Integrated Circuit Device - An internal voltage regulator in an integrated circuit device is always active upon initial start-up and/or power-on-reset operations. The internal voltage regulator protects the low voltage core logic circuits of the integrated circuit device from excessively high voltages that may be present in a particular application. In addition, nonvolatile memory may be part of and operational with the low voltage core logic circuits for storing device operating parameters. Therefore, the internal voltage regulator also protects the low voltage nonvolatile memory from excessive high voltages. Once the integrated circuit device has stabilized and all logic circuits therein are fully function, a bit(s) in the nonvolatile memory may be read to determine if the internal voltage regulator should remain active, e.g., how power operation with a high voltage source, or be placed into a bypass mode for low power operation when the integrated circuit device is powered by a low voltage. | 11-06-2008 |
| 20100109624 | Low Drop Out (LDO) Bypass Voltage Regulator - A power element bypass and voltage regulation circuit shutdown is used in a low drop out (LDO) bypass voltage regulator to minimize current drawn by the voltage regulator circuit when the supply input voltage approaches the regulated output voltage of the voltage regulation circuit. Two modes of operation are used in the low drop out (LDO) bypass voltage regulator. A regulate mode is used when the supply input voltage is greater than the reference voltage input, and a track mode is used when the supply input voltage is less than or equal to approximately the regulated output voltage of the voltage regulation circuit. Hysteresis may be introduced when switching between the regulate and track modes of operation. | 05-06-2010 |
Ruan Lourens, Austin, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080272657 | User Selectable Pin for Connection of an Internal Regulator to an External Filter/Stabilization Capacitor and Prevention of a Current Surge Therebetween - An integrated circuit device provides a choice of external pins (connections) that may be user selectable for coupling an external filter/stabilization capacitor to an internal voltage regulator. However, connecting the output of a internal voltage regulator to an uncharged external filter/stabilization capacitor (or to a capacitor charged to a different voltage level than the internal regulation voltage) through a low impedance path can cause the regulator output voltage to sag/spike if the internal voltage regulator tries to charge/discharge the capacitor up/down to equilibrium with the regulator output voltage. To minimize this potential sag/spike, the voltage on the external filter/stabilization capacitor may be adjusted in a controlled manner to substantially the same voltage as the voltage on the output of the internal voltage regulator, and then the internal voltage regulator is operationally coupled through a low impedance to the external regulator filter/stabilization capacitor. | 11-06-2008 |
Ruan Lourens, Cedar Park, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080272830 | Variable Power and Response Time Brown-Out-Reset Circuit - A brown-out-reset circuit having programmable power and response time characteristics. These characteristics may be programmed over an n-bit wide bus for 2 | 11-06-2008 |