Patents by Inventor Frans P. Lautzenhiser
Frans P. Lautzenhiser 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: 7476422Abstract: The invention concerns a copper-based circuit having an electrically insulative substrate, a bond layer including silver formed over select portions of the substrate according to a desired shape of the circuit, and an electrically conductive layer including plastically deformed particles of copper deposited on the bond layer.Type: GrantFiled: May 23, 2002Date of Patent: January 13, 2009Assignee: Delphi Technologies, Inc.Inventors: Alaa A. Elmoursi, Frans P. Lautzenhiser, Albert B. Campbell, John R. Smith
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Patent number: 6949156Abstract: A monolithic self-constrained green body tape for use in low temperature ceramic co-firing is provided. The tape contains at least two layers: one low temperature ceramic layer containing particles of a glass, a ceramic, and an organic binder, and a self-constraining layer containing a refractory ceramic and a wetting agent for the glass in the first layer. When the tape is fired at a sintering temperature of the low temperature ceramic layer, densification occurs in the z (thickness) direction, but essentially no shrinkage (less than about 1%) occurs in the x-y planes. A method for forming a multilayer green body tape using simultaneous wet on wet ceramic slurry deposition is also provided. A dense, monolithic, low temperature, co-fired, self-constrained, multicomponent structure is also provided. The structure contains at least two multilayer ceramic substrates having electronic circuit components mounted thereon or therein.Type: GrantFiled: February 13, 2004Date of Patent: September 27, 2005Assignee: Heraeus IncorporatedInventors: Frans P. Lautzenhiser, Edmar M. Amaya, J. Thomas Hochheimer
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Patent number: 6874378Abstract: A pressure transducer suitable for use as a component of a passive occupant detection system installed in a passenger vehicle. The transducer comprises first and second contact members separated by a spacing member. The first contact member has on a surface thereof a primary contact comprising first and second terminations and portions spaced apart in a first direction. The second contact member has on a surface thereof a plurality of secondary contacts crossing and facing the spaced-apart portions of the primary contact through an opening in the spacing member. Application of an increasing force causes the contact members to move toward each other, causing an increasing number of the spaced-apart portions to be shorted out by the secondary contacts and causing an increasing number of secondary contacts to contact the primary contact, thereby altering the electrical path between the terminations of the primary contact.Type: GrantFiled: July 30, 2003Date of Patent: April 5, 2005Assignee: Delphi Technologies, Inc.Inventors: Frans P. Lautzenhiser, Anthony J. Stankavich, John D Myers, Terrence Evans
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Publication number: 20040159390Abstract: A monolithic self-constrained green body tape for use in low temperature ceramic co-firing is provided. The tape contains at least two layers: one low temperature ceramic layer containing particles of a glass, a ceramic, and an organic binder, and a self-constraining layer containing a refractory ceramic and a wetting agent for the glass in the first layer. When the tape is fired at a sintering temperature of the low temperature ceramic layer, densification occurs in the z (thickness) direction, but essentially no shrinkage (less than about 1%) occurs in the x-y planes. A method for forming a multilayer green body tape using simultaneous wet on wet ceramic slurry deposition is also provided. A dense, monolithic, low temperature, co-fired, self-constrained, multicomponent structure is also provided. The structure contains at least two multilayer ceramic substrates having electronic circuit components mounted thereon or therein.Type: ApplicationFiled: February 13, 2004Publication date: August 19, 2004Applicant: Heraeus IncorporatedInventors: Frans P. Lautzenhiser, Edmar M. Amaya, J. Thomas Hochheimer
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Patent number: 6743534Abstract: A monolithic self-constrained green body tape for use in low temperature ceramic co-firing is provided. The tape contains at least two layers: one low temperature ceramic layer containing particles of a glass, a ceramic, and an organic binder, and a self-constraining layer containing a refractory ceramic and a wetting agent for the glass in the first layer. When the tape is fired at a sintering temperature of the low temperature ceramic layer, densification occurs in the z (thickness) direction, but essentially no shrinkage (less than about 1%) occurs in the x-y planes. A method for forming a multilayer green body tape using simultaneous wet on wet ceramic slurry deposition is also provided. A dense, monolithic, low temperature, co-fired, self-constrained, multicomponent structure is also provided. The structure contains at least two multilayer ceramic substrates having electronic circuit components mounted thereon or therein.Type: GrantFiled: October 1, 2002Date of Patent: June 1, 2004Assignee: Heraeus IncorporatedInventors: Frans P. Lautzenhiser, Edmar M. Amaya, J. Thomas Hochheimer
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Publication number: 20030219576Abstract: The invention concerns a copper-based circuit having an electrically insulative substrate, a bond layer including silver formed over select portions of the substrate according to a desired shape of the circuit, and an electrically conductive layer including plastically deformed particles of copper deposited on the bond layer.Type: ApplicationFiled: May 23, 2002Publication date: November 27, 2003Inventors: Alaa A. Elmoursi, Frans P. Lautzenhiser, Albert B. Campbell, John R. Smith
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Publication number: 20030087136Abstract: A monolithic self-constrained green body tape for use in low temperature ceramic co-firing is provided. The tape contains at least two layers: one low temperature ceramic layer containing particles of a glass, a ceramic, and an organic binder, and a self-constraining layer containing a refractory ceramic and a wetting agent for the glass in the first layer. When the tape is fired at a sintering temperature of the low temperature ceramic layer, densification occurs in the z (thickness) direction, but essentially no shrinkage (less than about 1%) occurs in the x-y planes. A method for forming a multilayer green body tape using simultaneous wet on wet ceramic slurry deposition is also provided. A dense, monolithic, low temperature, co-fired, self-constrained, multicomponent structure is also provided. The structure contains at least two multilayer ceramic substrates having electronic circuit components mounted thereon or therein.Type: ApplicationFiled: October 1, 2002Publication date: May 8, 2003Applicant: Heraeus IncorporatedInventors: Frans P. Lautzenhiser, Edmar M. Amaya, J. Thomas Hochheimer
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Patent number: 5527627Abstract: An ink composition is provided for forming an ultra-thick thick film which is suitable for conducting heat laterally from a heat generating device supported on a substrate. The ink composition is formulated to enable the ultra-thick thick film to be formed as a single layer, such that only a single print, dry and fire cycle is required to form the film. Advantageously, ultra-thick thick films having thicknesses of about 125 micrometers (about 0.005 inch) and greater can be formed by a single layer of the ink composition.Type: GrantFiled: November 21, 1994Date of Patent: June 18, 1996Assignee: Delco Electronics Corp.Inventors: Frans P. Lautzenhiser, Dwadasi H. R. Sarma, Fred E. Richter, Carl W. Berlin
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Patent number: 5524490Abstract: An inductive sensing element for sensing displacement of a resilient flexible beam or diaphragm. The inductive sensing element comprises an open faced member and a closed faced member one of which is attachable to the flexible beam and the other of which is attachable to a stationary member. The parameters of both the open and closed faced members are selected so that the self-inductance of the open faced member is determined by the overall distance separating the members. Both the open and closed faced members have a magnetic coating and the open face member further comprises an electrically conductive coating arranged in a predetermined pattern on its magnetic coating.Type: GrantFiled: May 25, 1995Date of Patent: June 11, 1996Assignee: Delco Electronics CorporationInventors: Frans P. Lautzenhiser, Dwadasi H. R. Sarma
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Patent number: 5464570Abstract: The invention includes the discovery that the addition of a thermosetting polymer to a thick-film conductor formulation including a thermoplastic polymer will substantially retard the spreading of the thick-film conductor ink upon firing of the printed conductor. The thermosetting polymer may be from the family of allylic esters, for example poly(diallyl phthalate). The invention also includes the discovery that the thermosetting resin can be dissolved with an organic solvent to form an additive so as to uniformly distribute the thermosetting polymer within the thick-film conductor formulation including the thermoplastic polymers. Preferred organic solvents include alcohols with a weight ratio of thermoset-to-organic solvent ranging from about 1:1.5 to about 1:3.Type: GrantFiled: October 25, 1993Date of Patent: November 7, 1995Assignee: Delco Electronics CorporationInventors: Frans P. Lautzenhiser, Bradley H. Carter, Donald A. Ozogar, Dwadasi H. R. Sarma
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Patent number: 5456109Abstract: A rotational accelerometer has a pair of coplanar, operationally independent linear acceleration sensors. Coplanarity is provided by a unitary substrate which forms the base structure of the operationally independent linear acceleration sensors.Type: GrantFiled: March 29, 1993Date of Patent: October 10, 1995Assignee: Delco Electronics CorporationInventors: Frans P. Lautzenhiser, Bradley R. Knigga, Gary M. Gillund