Patents by Inventor Wolfgang Zeller
Wolfgang Zeller 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: 10826270Abstract: Systems and methods are described herein to thermally regulate laser diodes. During operation, the structure of a laser diode may generate heat, which will affect the stability and accuracy of the output wavelength of the laser diode. During an OFF stage, the structure of the laser diode will then lose heat, creating a thermal gradient as the laser diode is switched between operation and an OFF state. The systems and methods provide constant average heat and a stable thermal gradient by integrating a laser diode power-coupled supply and a heater onto a heatspreader, such that the output wavelength of a coupled laser diode may be stabilized.Type: GrantFiled: November 4, 2016Date of Patent: November 3, 2020Assignee: Automotive Coalition for Traffic Safety, Inc.Inventors: Derek Treese, Nicolas Koslowski, Michael Legge, Wolfgang Zeller
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Publication number: 20170194763Abstract: Systems and methods are described herein to thermally regulate laser diodes. During operation, the structure of a laser diode may generate heat, which will affect the stability and accuracy of the output wavelength of the laser diode. During an OFF stage, the structure of the laser diode will then lose heat, creating a thermal gradient as the laser diode is switched between operation and an OFF state. The systems and methods provide constant average heat and a stable thermal gradient by integrating a laser diode power-coupled supply and a heater onto a heatspreader, such that the output wavelength of a coupled laser diode may be stabilized.Type: ApplicationFiled: November 4, 2016Publication date: July 6, 2017Inventors: Derek Treese, Nicolas Koslowski, Michael Legge, Wolfgang Zeller
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Patent number: 8855156Abstract: The invention relates to a DFB laser diode having a lateral coupling, which comprises at least one semi-conductor substrate (10), at least one active layer (40) that is arranged on the semiconductor substrate, at least one ridge (70) that is arranged above the active layer (40), at least one periodic surface structure (110) that is arranged next to the ridge (70) above the active layer (40) and at least one wave guide layer (30, 50) comprising a thickness ?1 ?m that is arranged below and/or above the active layer.Type: GrantFiled: May 5, 2010Date of Patent: October 7, 2014Assignee: nanoplus GmbH Nanosystems and TechnologiesInventors: Johannes Bernhard Koeth, Wolfgang Zeller
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Publication number: 20120093187Abstract: The invention relates to a DFB laser diode having a lateral coupling, which comprises at least one semi-conductor substrate (10), at least one active layer (40) that is arranged on the semiconductor substrate, at least one ridge (70) that is arranged above the active layer (40), at least one periodic surface structure (110) that is arranged next to the ridge (70) above the active layer (40) and at least one wave guide layer (30, 50) comprising a thickness ?1 ?m that is arranged below and/or above the active layer.Type: ApplicationFiled: May 5, 2010Publication date: April 19, 2012Inventors: Johannes Bernhard Koeth, Wolfgang Zeller
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Patent number: 6971309Abstract: In order to create preconditions, in a web-fed rotary press, for good format variability of the printed products and economic utilization of the printing material, at least two printed pages of different heights are arranged in the circumferential direction on a form cylinder.Type: GrantFiled: September 24, 2003Date of Patent: December 6, 2005Assignee: MAN Roland Druckmaschinen AGInventors: Andreas Birkenfeld, Peer Dilling, Robert Kersch, Wolfgang Zeller
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Patent number: 6880439Abstract: A method of cross-cutting a moving web uses a cutting knife operably mounted on a knife cylinder having a circumferential distance LZ where LZ is smaller than a cut length, LA. The knife cylinder for revolving in a first and a second opposite direction is powered by a drive motor in either direction. The method includes revolving the knife cylinder in a first direction, cutting the web with the cutting knife, and completing a first cut. The knife cylinder is then reversed to retard progress in the first direction and then accelerated to the speed of the moving web until starting the second cut.Type: GrantFiled: March 26, 2003Date of Patent: April 19, 2005Assignee: MAN Roland Druckmaschinen AGInventors: Robert Kersch, Wolfgang Zeller
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Patent number: 6755130Abstract: An automatically controlled cleaning system has a cleaning fluid reservoir with a feed of the cleaning fluid to the rotating bodies to be cleaned via a cleaning element for each body. Its serviceability can be monitored, in particular erroneously exceeding the critical quantity of cleaning agent per unit time during the cleaning of the rotating bodies of the press can be detected and countermeasures can be initiated, by constructing the cleaning reservoir as a pressure container which can be pressurized from a compressed-air source via an electronically drivable changeover valve V1, and by implementing each feed of the cleaning fluid to the rotating body by means of a fluid feed line in which there are installed at least one electronically driveable changeover valve V4 that controls the flow, and at least one further electronically driveable changeover valve V5 which controls the expulsion quantities and expulsion times of the cleaning fluid.Type: GrantFiled: March 4, 2003Date of Patent: June 29, 2004Assignee: MAN Roland Druckmaschinen AGInventors: Andrea Kersch, Ulrike Lütgens, Wolfgang Zeller
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Publication number: 20040060463Abstract: In order to create preconditions, in a web-fed rotary press, for good format variability of the printed products and economic utilization of the printing material, at least two printed pages of different heights are arranged in the circumferential direction on a forme cylinder.Type: ApplicationFiled: September 24, 2003Publication date: April 1, 2004Applicant: MAN Roland Druckmaschinen AGInventors: Andreas Birkenfeld, Peer Dilling, Robert Kersch, Wolfgang Zeller
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Publication number: 20040060464Abstract: In order to provide good format variability of printed products and economic utilization of the printing material, a web is supplied to a cross-cutting device and cut up into sheets with different cut lengths corresponding to heights of printed pages in a sequence.Type: ApplicationFiled: September 22, 2003Publication date: April 1, 2004Applicant: MAN Roland Druckmaschinen AGInventors: Andreas Birkenfeld, Peer Dilling, Robert Kersch, Wolfgang Zeller
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Publication number: 20030183056Abstract: A method of cross-cutting a moving web uses a cutting knife operably mounted on a knife cylinder having a circumferential distance LZ where LZ is smaller than a cut length, LA. The knife cylinder for revolving in a first and a second opposite direction is powered by a drive motor in either direction. The method includes revolving the knife cylinder in a first direction, cutting the web with the cutting knife, and completing a first cut. The knife cylinder is then reversed to retard progress in the first direction and then accelerated to the speed of the moving web until starting the second cut.Type: ApplicationFiled: March 26, 2003Publication date: October 2, 2003Applicant: MAN Roland Druckmaschinen AGInventors: Robert Kersch, Wolfgang Zeller
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Publication number: 20030167949Abstract: An automatically controlled cleaning system has a cleaning fluid reservoir with a feed of the cleaning fluid to the rotating bodies to be cleaned via a cleaning element for each body. Its serviceability can be monitored, in particular erroneously exceeding the critical quantity of cleaning agent per unit time during the cleaning of the rotating bodies of the press can be detected and countermeasures can be initiated, by constructing the cleaning reservoir as a pressure container which can be pressurized from a compressed-air source via an electronically drivable changeover valve V1, and by implementing each feed of the cleaning fluid to the rotating body by means of a fluid feed line in which there are installed at least one electronically driveable changeover valve V4 that controls the flow, and at least one further electronically driveable changeover valve V5 which controls the expulsion quantities and expulsion times of the cleaning fluid.Type: ApplicationFiled: March 4, 2003Publication date: September 11, 2003Applicant: MAN Roland Druckmaschinen AGInventors: Andrea Kersch, Ulrike Lutgens, Wolfgang Zeller
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Publication number: 20020057677Abstract: The invention concerns a method for the realization of a service for an automatic transmission of packet data to a subscriber of a communication network which comprises a packet data network, in particular, an Internet information service, the packet data to be transmitted being stored in a network facility of the communication network and being transmitted via the packet data network, wherein, if the communication network also comprises a circuit-switching telephone network, a telephone call of a first subscriber to a further subscriber causes the network facility to transmit packet data to one of the subscribers, as well as a communication network, an information computer and a program module for it.Type: ApplicationFiled: November 2, 2001Publication date: May 16, 2002Applicant: ALCATELInventors: Lothar Katzschner, Andreas Lemke, Emmanuel Sutter, Wolfgang Zeller
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Publication number: 20010053215Abstract: The invention relates to a method of processing the calls addressed to a called subscriber (B) of a telephone network (KN), comprising the steps:Type: ApplicationFiled: June 13, 2001Publication date: December 20, 2001Applicant: ALCATELInventors: Sascha Larger, Wolfgang Zeller, Emmanuel Sutter
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Patent number: 5091136Abstract: In a method of making relief structures on mother-of-pearl layers removed from the shells of mollusks a portion of the layer is disposed on a negative mold having a relief shape formed therein, a modelling material is disposed on the layer portion and the layer portion is pressed into engagement with the negative mold by way of a planar stamp pressing onto the modelling material thereby relief-shaping the mother-of-pearl layer.Type: GrantFiled: June 19, 1991Date of Patent: February 25, 1992Assignee: Bock & Schupp GmbH & Co. KGInventors: Jurgen Bock, Karola Metzger-Pegau, Wolfgang Zeller