Patents by Inventor Stefan Wilhelm
Stefan Wilhelm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6631226Abstract: An arrangement and corresponding method are provided for coupling radiation, preferably laser radiation, into a scanning head with a scanning unit in at least two dimensions. The radiation is focussed on an object via a microscope objective via at least one light-conducting fiber which is coupled with the scanning head. A collimator is arranged downstream of the fiber end at the scanning head for collimating the radiation exiting in a divergent manner at the fiber end.Type: GrantFiled: October 2, 2000Date of Patent: October 7, 2003Assignee: Carl Zeiss Jena GmbHInventors: Guenter Schoeppe, Stefan Wilhelm, Ulrich Simon, Hartmut Heinz, Bernhard Groebler
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Publication number: 20030104786Abstract: In a system and method of adapting an ECSD connection, interruption times and data loss due to a change in the modulation, coding scheme, and number of timeslots of the connection may be minimized or eliminated. The interruption times and data loss may be minimized or eliminated by allocating a peak number of substreams for a given mobile radio connection based on a user requested data rate and/or the number of timeslots used to realize the user requested data rate. Data loss may also be minimized or eliminated by using in-band signaling to signal a change in the modulation, coding scheme, and/or number of timeslots.Type: ApplicationFiled: November 26, 2001Publication date: June 5, 2003Inventors: Stefan Wilhelm Jung, Peter Hans Edlund, Lars-Goran Lund, Erik Andreas Colban, Christer Edholm, Patrik Bredin
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Patent number: 6563632Abstract: An arrangement and corresponding method are provided for coupling radiation, preferably laser radiation, into a scanning head with a scanning unit in at least two dimensions. The radiation is focussed on an object via a microscope objective via at least one light-conducting fiber which is coupled with the scanning head. A collimato is arranged downstream of the fiber end at the scanning head for collimatiing the radiation exiting in a divergent manner at the fiber end.Type: GrantFiled: May 3, 2000Date of Patent: May 13, 2003Assignee: Carl Zeiss Jena GmbHInventors: Guenter Schoeppe, Stefan Wilhelm, Ulrich Simon, Hartmut Heinz, Bernhard Groebler
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Patent number: 6486458Abstract: An arrangement and corresponding method are provided for coupling radiation, preferably laser radiation, into a scanning head with a scanning unit in at least two dimensions. The radiation is focussed on an object via a microscope objective via at least one light-conducting fiber which is coupled with the scanning head. A collimator is arranged downstream of the fiber end at the scanning head for collimating the radiation exiting in a divergent manner at the fiber end.Type: GrantFiled: May 3, 2000Date of Patent: November 26, 2002Assignee: Carl Zeiss Jena GmbHInventors: Guenter Schoeppe, Stefan Wilhelm, Ulrich Simon, Hartmut Heinz, Bernhard Groebler
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Patent number: 6462345Abstract: A process for confocal microscopy is disclosed in which laser light is coupled into a microscope beam path, directed successively with respect to time onto different locations of a specimen, and an image of the scanned plane is generated from the light reflected and emitted by the irradiated locations. A change in the spectral composition and in the intensity of light is carried out during the deflection of the laser beam from location to location, while the deflection continues in an uninterrupted manner. In this way, at least two locations of the specimen located next to one another are acted upon by light with different spectral characteristics and by laser radiation of different intensity. By periodically interrupting the coupling in of the laser light during the deflection of the microscope beam path, it is made possible that only selected portions of the image field are acted upon by the laser radiation. A laser scanning microscope for carrying out this process is also disclosed.Type: GrantFiled: April 21, 1999Date of Patent: October 8, 2002Assignees: Carl Zeiss Jena GmBh, European Molecular Biology LaboratoryInventors: Ulrich Simon, Sebastian Tille, Gunter Moehler, Stefan Wilhelm, Ulrich Meisel, Ernst Hans Karl Stelzer
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Publication number: 20020124998Abstract: The invention relates to a heat exchanger having at least one heat exchanger block (1) and an insulating vessel which surrounds the heat exchanger, in which securing means (3, 4, 5, 7) are provided for securing the heat exchanger block (1) suspended in the insulation vessel. According to the invention, the heat exchanger block. (1) is arranged movably in the insulation vessel (FIG. 1).Type: ApplicationFiled: March 6, 2002Publication date: September 12, 2002Applicant: LINDE AKTIENGESELLSCHAFTInventors: Stefan Wilhelm, Wolfgang Bader
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Patent number: 6205157Abstract: A method for maintaining synchronization between a base transceiver station (BTS) and an interworking function (IWF) within a cellular communications network is disclosed. The method utilizes a synchronization procedure between the IWF and the BTS that makes the IWF aware of propagation delays between the IWF and BTS. The IWF utilizes this information to adapt to the delays such that the correct sequence is unpacked uplink when obtained from the base transceiver station. The IWF also uses synchronization data to control transmissions from the IWF to the BTS such that frame numbers and timeslots are received at the BTS in the correct sequence.Type: GrantFiled: June 12, 1997Date of Patent: March 20, 2001Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Johan Karoly Peter Galyas, Stefan Wilhelm Jung
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Patent number: 6167173Abstract: An arrangement and corresponding method are provided for coupling radiation, preferably laser radiation, into a scanning head with a scanning unit in at least two dimensions. The radiation is focussed on an object via a microscope objective via at least one light-conducting fiber which is coupled with the scanning head. A collimator is arranged downstream of the fiber end at the scanning head for collimating the radiation exiting in a divergent manner at the fiber end.Type: GrantFiled: August 5, 1998Date of Patent: December 26, 2000Assignee: Carl Zeiss Jena GmbHInventors: Guenter Schoeppe, Stefan Wilhelm, Ulrich Simon, Hartmut Heinz, Bernhard Groebler
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Patent number: 5958290Abstract: The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.Type: GrantFiled: February 23, 1995Date of Patent: September 28, 1999Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: David Coates, Shirley Marden, Graham Smith, Ulrich Finkenzeller, Volker Reiffenrath, Reinhard Hittich, Stefan Wilhelm
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Patent number: 5698134Abstract: The invention relates to an electrooptical systemwhich between 2 electrode layers contains a liquid crystal mixture and a further optically transparent polymer medium, in which one of the electrode layers is in the form of an active matrix having nonlinear addressing elements integrated with the image point, while the other electrode layer forms the counter electrode,whose liquid crystal molecules have irregular orientation in the switched-off state,in which one of the refractive indices of the liquid crystal mixture is substantially the same as the refractive index of the medium n.sub.m and/or in which the quotient from the weight of the liquid crystal mixture and the weight of the optically transparent medium is 1.Type: GrantFiled: July 27, 1994Date of Patent: December 16, 1997Assignees: Merck KGaA, Sharp CorporationInventors: Raymond Edward Jubb, Ulrich Finkenzeller, Stefan Wilhelm, Shohei Naemura, Toshiyuki Hirai, Shuichi Kouzaki
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Patent number: 5540769Abstract: Platelet-shaped colored pigments containing titanium dioxide, one or more suboxides of titanium and an oxide or oxides of one or more metals other than titanium or non-metals and a process for the preparation thereof is disclosed.Type: GrantFiled: September 23, 1994Date of Patent: July 30, 1996Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Klaus-Dieter Franz, Klaus Ambrosius, Stefan Wilhelm, Katsuhisa Nitta
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Patent number: 5384066Abstract: The invention relates to a microdroplet or network system which is provided with active matrix addressing and whose liquid-crystal mixture contains one or more compounds of the formula I and in which the polymerization of the optically transparent medium is initiated by a photoinitiator which forms free radicals.Type: GrantFiled: January 27, 1992Date of Patent: January 24, 1995Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Eike Poetsch, Raymond Jubb, Ulrich Finkenzeller, Thomas Jacob, Jorg Ohngemach, Stefan Wilhelm
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Patent number: 5356557Abstract: The invention relates to an electrooptical system which contains, between 2 electrode layers, a liquid-crystal mixture and a further optically transparent polymeric medium, one of the electrode layers being formed as an active matrix having nonlinear addressing elements integrated into the pixel, while the other electrode layer forms the counterelectrode,whose liquid-crystal molecules have an irregular alignment in the switched-off state,in which one of the refractive indices of the liquid-crystal mixture essentially corresponds to the refractive index of the medium n.sub.m and/or in which the quotient of the mass of the liquid-crystal mixture and the mass of the optically transparent medium is 1.Type: GrantFiled: March 13, 1992Date of Patent: October 18, 1994Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Raymond Jubb, Ulrich Finkenzeller, Eike Poetsch, Stefan Wilhelm
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Patent number: 5344587Abstract: The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-l,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.Type: GrantFiled: June 3, 1991Date of Patent: September 6, 1994Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: David Coates, Shirley Marden, Graham Smith, Ulrich Finkenzeller, Volker Reiffenrath, Reinhard Hittich, Stefan Wilhelm