Patent application number | Description | Published |
20080211021 | Manufacturing process of a vertical-conduction MISFET device with gate dielectric structure having differentiated thickness and vertical-conduction MISFET device thus manufacture - According to an embodiment of a method for manufacturing a MISFET device, in a semiconductor wafer, a semiconductor layer is formed, having a first type of conductivity and a first level of doping. A first body region and a second body region, having a second type of conductivity, opposite to the first type of conductivity, and an enriched region, extending between the first and second body regions are formed in the semiconductor layer. The enriched region has the first type of conductivity and a second level of doping, higher than the first level of doping. Moreover, a gate electrode is formed over the enriched region and over part of the first and second body regions, and a dielectric gate structure is formed between the gate electrode and the semiconductor layer, the dielectric gate structure having a larger thickness on the enriched region and a smaller thickness on the first and second body regions. To form the enriched region, a first conductive layer is made on the semiconductor layer, an enrichment opening is formed in the first conductive layer, and a dopant species is introduced into the semiconductor layer through the enrichment opening. Furthermore, the formation of the dielectric gate structure envisages filling the enrichment opening with dielectric material, prior to forming the first body region and the second body region. | 09-04-2008 |
20100167481 | MANUFACTURING PROCESS OF A VERTICAL-CONDUCTION MISFET DEVICE WITH GATE DIELECTRIC STRUCTURE HAVING DIFFERENTIATED THICKNESS AND VERTICAL-CONDUCTION MISFET DEVICE THUS MANUFACTURE - According to an embodiment of a method for manufacturing a MISFET device, in a semiconductor wafer, a semiconductor layer is formed, having a first type of conductivity and a first level of doping. A first body region and a second body region, having a second type of conductivity, opposite to the first type of conductivity, and an enriched region, extending between the first and second body regions are formed in the semiconductor layer. The enriched region has the first type of conductivity and a second level of doping, higher than the first level of doping. Moreover, a gate electrode is formed over the enriched region and over part of the first and second body regions, and a dielectric gate structure is formed between the gate electrode and the semiconductor layer, the dielectric gate structure having a larger thickness on the enriched region and a smaller thickness on the first and second body regions. To form the enriched region, a first conductive layer is made on the semiconductor layer, an enrichment opening is formed in the first conductive layer, and a dopant species is introduced into the semiconductor layer through the enrichment opening. Furthermore, the formation of the dielectric gate structure envisages filling the enrichment opening with dielectric material, prior to forming the first body region and the second body region. | 07-01-2010 |
Patent application number | Description | Published |
20080253895 | BLADE RETENTION SYSTEM FOR USE IN A GAS TURBINE ENGINE - The blade retention system comprises an annular sealing plate and a plurality of spaced-apart blade retention tabs having opposite first and second ends and a radially-orientated corrugated profile. The first ends of the tabs are connected to a first side face of the annular sealing plate. Each tab is configured and disposed to be inserted through a bottom portion of a respective one of the blade retention slots when the first side face of the sealing plate is positioned against one of the side faces of the rotor disc and covers an end side of the blade retention slots. The second end of each tab extends beyond the other of the side faces of the rotor disc and is bent to secure the annular sealing plate with reference to the rotor disc. | 10-16-2008 |
20110044801 | BLADE OUTER AIR SEAL COOLING - A blade outer air seal (BOAS) segment has a plurality of cooling passages axially extending through a platform of the BOAS segment. The passages each have an inlet defined in a radially outer surface and an exit defined on a leading edge of the platform. At least one of the passages positioned close to respective circumferential sides of the platform extends linearly from one of the inlets and is skewed away from the axial direction to cool a corner area of the platform. | 02-24-2011 |
20110044802 | BLADE OUTER AIR SEAL SUPPORT COOLING AIR DISTRIBUTION SYSTEM - A blade outer air seal (BOAS) of a gas turbine engine has a segmented support ring to support a segmented turbine shroud. The support ring has a cooling air distribution system which includes a plurality of inlet cavities extending axially and inwardly to communicate with an inner cooling air passage within the respective support segments. The inlet cavities each are formed with two recesses defined in respective adjacent two support segments. | 02-24-2011 |
20110044803 | BLADE OUTER AIR SEAL ANTI-ROTATION - A blade outer air seal (BOAS) assembly includes a static turbine shroud formed by BOAS segments and a support ring formed by BOAS support segments. Each BOAS support segment supports one or more BOAS segments. The BOAS assembly further includes an anti-rotation apparatus for restricting relative circumferential movement between the turbine shroud and the support ring. The anti-rotation apparatus includes a stopper provided at least in one of the BOAS support segments and a cast anti-rotation tab integrated with at least one of the BOAS segments supported on that at least one BOAS support segment. The stopper and cast anti-rotation tab circumferentially abut each other. | 02-24-2011 |
20110052372 | TURBINE DISC AND RETAINING NUT ARRANGEMENT - A turbine rotor for a gas turbine engine comprises a disc having a hub defining a central bore for receiving an engine shaft. A nut retains the disc on the shaft. The disc retaining nut has at least one cooling passage defined therein and disposed for directing a flow of cooling air passing through the bore of the disc. | 03-03-2011 |
20110081253 | GAS TURBINE ENGINE BALANCING - An apparatus and method for balancing a gas turbine engine rotor includes a plurality of balancing weights adapted to be selectively attached to at least one of inlets or outlets of a cooling passage of the rotor. The weights include cooling access which permits coolant to communicate with the cooling passage. | 04-07-2011 |
Patent application number | Description | Published |
20090217369 | Method and system for processing packet flows, and computer program product therefor - Packet flows are processed, e.g. to perform an intrusion detection function in a communication network, by means of a multiprocessor system including a plurality of processing units. The packets are distributed for processing among the processing units via a distribution function. Such a distribution function is selectively allotted to one of the processing units of the plurality. A preferred embodiment of the arrangement involves using a single Symmetric Multi-Processor machine with a single network port to Gigabit/sec link. The corresponding system architecture does not require any intermediate device, or any external load balancing mechanism. All the processing work is performed on a single system, which is able to dynamically balance the traffic load among the several independent CPUs. By resorting to a specific scheduling arrangement, such a system is able to effectively distribute the computations required to perform both the loadbalancing and the detection operations. | 08-27-2009 |
20100287128 | Anomaly Detection for Link-State Routing Protocols - Disclosed herein is an anomaly detection method for link-state routing protocols, a link-state routing protocol providing for link-state update (LSU) messages to be exchanged between nodes in a packet-based network, wherein each link-state update message includes link-state advertisement (LSA) message(s) each having a respective header. The method comprises monitoring the link-state advertisement messages exchanged in the network, extracting and forming respective feature vectors with the values in the fields of the headers of the monitored link-state advertisement messages, and detecting an anomaly related to routing based on the feature vectors. In particular, detecting an anomaly related to routing includes feeding the feature vectors to a machine learning system, conveniently a one-class classifier, preferably a one-class support vector machine (OC-SVM). | 11-11-2010 |