Hafkemeyer
Marcus Hafkemeyer, Muenchen DE
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20100001581 | System for Supplying Voltage to Electrical Loads of a Motor Vehicle - A system is provided for supplying voltage to electrical loads in the on board electrical system of a motor vehicle, in which system the onboard electrical system includes at least two onboard electrical system regions. The first onboard electrical system region has an electric generator, a vehicle battery, and one or more first electrical loads, and the second onboard electrical system region has a double-layer capacitor or a so-called supercap, and one or more second electrical loads. A blocking apparatus, in particular a semiconductor diode or a circuit breaker, is provided between the two onboard electrical system regions. The blocking apparatus permits current to flow from the first onboard electrical system region to the second onboard electrical system region and largely prevents current from flowing in reverse from the second onboard electrical system region to the first onboard electrical system region. The output voltage of the electrical generator is increased and the supercap is charged when a first threshold value of the electrical voltage is undershot in the second onboard electrical system region. | 01-07-2010 |
Marcus Hafkemeyer, Jersey City, NJ US
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20130252035 | Energy Storage Device for a Motor Vehicle - A motor vehicle energy storage device includes a first electrical energy store characterized by a first characteristic voltage curve defining the open-circuit voltage of the first energy store depending on the relative charge state and by a first characteristic resistance curve defining the internal resistance of the first energy store relevant for a charge process of the energy store, and a second electrical energy store connected in parallel and characterized by a second characteristic voltage curve defining the open-circuit voltage of the second energy store depending on the relative charge state and by a second characteristic resistance curve defining the internal resistance relevant for a charge process of the second energy store. The voltage value ranges covered by the first characteristic voltage curve and the second characteristic voltage curve partially overlap, and the first and second characteristic resistance curves and the second characteristic resistance curve have exactly one intersecting point. | 09-26-2013 |
Markus Hafkemeyer, Bonn DE
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20110081254 | COMPRESSOR FOR A REFRIGERATION CYCLE, REFRIGERATION CYCLE AND METHOD FOR OPERATING THE SAME - A compressor ( | 04-07-2011 |
20110113822 | Refrigerating Circuit - The invention relates to a refrigerating circuit ( | 05-19-2011 |
20110146313 | REFRIGERATION CIRCUIT - A refrigeration circuit has a mono- or multi-component refrigerant, especially CO | 06-23-2011 |
Sabine Hafkemeyer, Marl DE
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20130164797 | PROCESS FOR THE IMPROVED SEPARATION OF A HYDROPHOBIC ORGANIC SOLUTION FROM AN AQUEOUS CULTURE MEDIUM - A process for the improved separation of a hydrophobic organic solution from an aqueous culture medium is provided. The process includes preparing an aqueous culture medium of a metabolically active cell having a decreased activity; contacting of the aqueous culture medium with a hydrophobic organic solution comprising a substrate for biotransformation; conducting a biotransformation of the substrate; and separating the hydrophobic organic solution comprising a biotransformed substrate from the aqueous culture medium. The decreased activity of the metabolically active cell is in comparison to a wild-type of the active cell and the decreased activity is of at least of one enzyme that catalyses one reaction of β-oxidation of fatty acids. The invention further provides a metabolically active cell that has a decreased activity, compared to its wild-type, of an enzyme that catalyses one of the reactions of the β-oxidation of fatty acids, including an enzyme selected from FadA, FadB, FadD, FadL and FadE as well as variants thereof. | 06-27-2013 |
20150044744 | BIOLOGICAL ALKANE OXIDATION - The invention relates to a method for oxidizing an alkane, comprising contacting the alkane with a type alkB oxidoreductase and using a type alkB oxidoreductase to prepare a mixture of oxidation products of an alkane, wherein the ratio of carboxylic acid to alcohol in the oxidation products is preferably greater than 1:1. | 02-12-2015 |