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Dahlman
Mark Cobb Dahlman, Huntsville, AL US
| Patent application number | Description | Published |
|---|---|---|
| 20090167203 | AC-powered, microprocessor-based, dimming LED power supply - A dimmable, light-emitting diode (LED) power supply adapted to provide a direct current (DC), constant current (“constant current source”) from a conventional, phase-controlled 120 VAC, 60 Hz power source is disclosed. The constant current source of the present invention utilizes two processes to control dimming. In a first process, the phase angle of the input voltage is used to control the duty cycle of a line frequency pulse width modulation (PWM). In a second process, a proportional-current limit adjustment is used to control the average current to the LED during the ON time of the line frequency by PWM. As a result, at relatively low phase angles, peak currents can be lowered, reducing flicker and improving the audible noise levels generated by the circuit. | 07-02-2009 |
Olof Dahlman, Stockholm SE
| Patent application number | Description | Published |
|---|---|---|
| 20090099354 | METHOD FOR SEPARATING POLYMERIC PENTOSE FROM A LIQUID/SLURRY - The present invention provides a method for extracting polymeric pentose, preferably xylan, from a polymeric pentose containing liquid/slurry, preferably black liquor, comprising the following steps: a) providing a polymeric pentose containing liquid/slurry; b) concentrating the polymeric pentose by membrane separation of a said polymeric pentose containing liquid/slurry; and c) adding alcohol to the concentrate obtained in step b) and subsequently acidifying said concentrate obtained in step b) for precipitating polymeric pentose whereby a polymeric pentose product, or an intermediate polymeric pentose product, is obtained. In this above way polymeric pentose, e.g. xylan, is separated whereby the use of methanol (less lignin must be kept in solution) and acid (less acid which buffers the pH-decrease) become much lower. The present invention also provides according to a second aspect a polymeric pentose product or an intermediate polymeric pentose product obtainable by the method according to the first aspect. The present invention also provides according to a third aspect use, preferably for the production of food additives or as chemical feed stock, of the polymeric pentose product or the intermediate polymeric pentose product of the second aspect of the invention. | 04-16-2009 |
| 20110028672 | UTILIZATION OF A WOOD HYDROLYSATE - The present invention relates to a method for utilizing a wood hydrolysate obtained from a hydrothermal treatment of a wood material method comprises the steps of providing a wood material, treating the wood material by means of an aqueous hydrothermal treatment so that a wood hydrolysate and a wood residue is formed. The wood hydrolysate comprises oligo- and polysaccharides as the main component of dry matter. The method further comprises the steps of; separating the wood hydrolysate into at least a first and a second fraction and using at least one of the at least first and second fractions for production of an intermediate or end product. Such end product may be e.g. a film, coating, package or a gel. The present invention also relates to a polymer product such as a film, a coating or a gel and its applications. The present invention provides for biodegradable and renewable polymer products and a method which utilizes and extracts a very high product value from a process. | 02-03-2011 |
Patrick Dahlman, Patrille SE
| Patent application number | Description | Published |
|---|---|---|
| 20100215296 | BEARING COMPONENT FOR A ROLLING BEARING OR FOR A SLIDING BEARING - The invention concerns a bearing component (Ia, Ib, | 08-26-2010 |
Patrik Dahlman, Patrille SE
| Patent application number | Description | Published |
|---|---|---|
| 20110000584 | Process for Forming Steel - The invention refers to a process for forming a steel component, incorporating the steps of—providing a blank having substantially the volume of the component to be formed,—heating the blank to a semi solid state with a specific liquid fraction,—forming the blank with a forging technique to a component of near net shape dimensions,—subjecting the formed, near net shape component, to a normalization combined with a hardening,—subjecting the normalized and hardened near net shape component to machining to give the component net shape. | 01-06-2011 |
Patrik Dahlman, Partille SE
| Patent application number | Description | Published |
|---|---|---|
| 20110158572 | Method for Manufacturing a Steel Component, A Weld Seam, A Welded Steel Component, and a Bearing Component - The invention concerns a method for manufacturing a steel component ( | 06-30-2011 |
Rikard Dahlman, Malmo SE
| Patent application number | Description | Published |
|---|---|---|
| 20090178027 | LAYERED ARCHITECTURE FOR MOBILE TERMINALS - Software architecture for a mobile terminal for a wireless telecommunications system and for other applications. The software architecture includes a plurality of layers arranged in order from layers providing higher level services to layers providing lower level services, at least one software module in each layer, and interface means for permitting communication among software modules pursuant to a set of defined dependency rules. | 07-09-2009 |