Patents by Inventor Sean Terrence Weaver
Sean Terrence Weaver 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: 11938477Abstract: A microfluidic cartridge is provided. The microfluidic cartridge has an interior and an exterior. The microfluidic cartridge includes a reservoir disposed in the interior of the microfluidic cartridge and configured to contain a fluid composition. The microfluidic cartridge includes an electric circuit disposed on the exterior of the microfluidic cartridge. The electric circuit comprises a first end portion having electrical contacts and a second end portion opposing the first end portion. The microfluidic cartridge includes a microfluidic die disposed on the exterior of the microfluidic cartridge, wherein the microfluidic die is electrically connected with the second end portion of the electric circuit and in fluid communication with the reservoir. A silicone pressure-sensitive adhesive is used to join the electric circuit with the exterior of the microfluidic cartridge.Type: GrantFiled: July 9, 2020Date of Patent: March 26, 2024Assignee: The Procter & Gamble CompanyInventors: Chisomaga Ugochi Nwachukwu, Judith Ann Hollingshead, Paul William Dryer, David Christopher Graham, Sean Terrence Weaver
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Publication number: 20210016279Abstract: A microfluidic cartridge is provided. The microfluidic cartridge has an interior and an exterior. The microfluidic cartridge includes a reservoir disposed in the interior of the microfluidic cartridge and configured to contain a fluid composition. The microfluidic cartridge includes an electric circuit disposed on the exterior of the microfluidic cartridge. The electric circuit comprises a first end portion having electrical contacts and a second end portion opposing the first end portion. The microfluidic cartridge includes a microfluidic die disposed on the exterior of the microfluidic cartridge, wherein the microfluidic die is electrically connected with the second end portion of the electric circuit and in fluid communication with the reservoir. A silicone pressure-sensitive adhesive is used to join the electric circuit with the exterior of the microfluidic cartridge.Type: ApplicationFiled: July 9, 2020Publication date: January 21, 2021Inventors: Chisomaga Ugochi NWACHUKWU, Judith Ann HOLLINGSHEAD, Paul William DRYER, David Christopher GRAHAM, Sean Terrence WEAVER
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Patent number: 8163819Abstract: Adhesive compositions, micro-fluid ejection devices, and methods for attaching micro-fluid ejection heads to devices. One such adhesive composition is provided for use in attaching a micro-fluid ejection head to a device, such as to reduce chip bowing and/or to decrease chip fragility upon curing of the adhesive. Such an exemplary composition may include one having from about 50.0 to about 95.0 percent by weight of at least one cross-linkable resin selected from the group consisting of epoxy resins, siloxane resins, urethane resins, and functionalized olefin resins; from about 0.1 to about 25.0 percent by weight of at least one thermal curative agent; and from about 0.0 to about 30.0 percent by weight filler, and exhibit a relatively low shear modulus upon curing (e.g., less than about 10.0 MPa at 25° C.).Type: GrantFiled: April 27, 2010Date of Patent: April 24, 2012Assignee: Lexmark International, Inc.Inventors: David Christopher Graham, Gary Anthony Holt, Jr., Jonathan Harold Laurer, Johnny Dale Massie, II, Melissa Marie Waldeck, Sean Terrence Weaver, Rich Wells
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Patent number: 8158336Abstract: A method of making a micro-fluid ejection head structure and micro-fluid ejection heads made by the method. The method includes applying a tantalum oxide layer to a surface of a fluid ejection actuator disposed on a device surface of a substrate so that the tantalum oxide layer is the topmost layer of a plurality of layers including a resistive layer, and a protective layer selected from a passivation layer, a cavitation layer, and a combination of a passivation layer and a cavitation layer. The tantalum oxide layer has a thickness (t) that satisfies an equation t=(¼*W/n), wherein W is a wavelength of radiation from a radiation source, and n is a refractive index of the tantalum oxide layer. A photoimageable layer is also applied to the substrate. The photoimageable layer is imaged with the radiation source and then developed.Type: GrantFiled: May 25, 2010Date of Patent: April 17, 2012Assignee: Lexmark International, Inc.Inventors: Byron Vencent Bell, Christopher Allen Craft, Bryan Thomas Fannin, Burton Lee Joyner, II, Sean Terrence Weaver
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Patent number: 8109608Abstract: A micro-fluid ejection head and methods for improving the fabrication and operation of the micro-fluid ejection head. The ejection head includes a photoimaged thick film layer attached to a substrate containing fluid ejection actuators. An orifice plate is laminated to the thick film layer. The orifice plate has a plurality of concentric orifices therein and is derived from a first photoresist material that is heated to a temperature sufficient to relieve film stresses in the photoresist material prior to exposing and developing the orifices in the orifice plate.Type: GrantFiled: October 4, 2007Date of Patent: February 7, 2012Assignee: Lexmark International, Inc.Inventors: Bryan Thomas Fannin, Vinod Kumar Gopalakrishnan, Christopher John Money, Sean Terrence Weaver
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Patent number: 8061811Abstract: Micro-fluid ejection heads and methods for fabricating micro-fluid ejection heads are provided, including those that use a non-conventional substrate and methods for making large array micro-fluid ejection heads. One such ejection head includes a substrate having a device surface with a plurality of fluid ejection actuator devices and a pocket disposed adjacent thereto. A chip associated with the plurality of fluid ejection actuator devices is attached in the chip pocket adjacent to the device surface of the substrate. A conductive material is deposited adjacent to the device surface of the substrate and in electrical communication with the chip.Type: GrantFiled: September 28, 2006Date of Patent: November 22, 2011Assignee: Lexmark International, Inc.Inventors: Frank Edward Anderson, Jeanne Marie Saldanha Singh, Carl Edmond Sullivan, Sean Terrence Weaver
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Patent number: 8029100Abstract: Micro-fluid ejection heads and methods for fabricating micro-fluid ejection heads are provided, including those that use a non-conventional substrate and methods for making large array micro-fluid ejection heads. One such ejection head includes a substrate having a device surface with a plurality of fluid ejection actuator devices and a pocket disposed adjacent thereto. A chip associated with the plurality of fluid ejection actuator devices is attached in the chip pocket adjacent to the device surface of the substrate. A conductive material is deposited adjacent to the device surface of the substrate and in electrical communication with the chip.Type: GrantFiled: April 22, 2010Date of Patent: October 4, 2011Assignee: Lexmark International, Inc.Inventors: Frank Edward Anderson, Jeanne Marie Saldanha Singh, Carl Edmond Sullivan, Sean Terrence Weaver
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Publication number: 20110014354Abstract: Thermally curable adhesive compositions and method for failure analysis in micro-fluid ejections heads. The adhesive composition may be provided by a composition including from about 50.0 to about 95.0 percent by weight of at least one cross-linkable resin, from about 0.1 to about 30.0 percent by weight of at least one thermal curative agent, and from about 0.0 to about 5.0 percent by weight filler, from about 0.1 to about 10.0 percent by weight fluorescent pigment. Upon curing, the adhesive composition exhibits a relatively low shear modulus.Type: ApplicationFiled: July 20, 2009Publication date: January 20, 2011Inventors: David Christopher Graham, Gary Anthony Holt, JR., Joel Paul Provence, Sean Terrence Weaver, Richard Donovan Wells
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Publication number: 20100229392Abstract: A method of making a micro-fluid ejection head structure and micro-fluid ejection heads made by the method. The method includes applying a tantalum oxide layer to a surface of a fluid ejection actuator disposed on a device surface of a substrate so that the tantalum oxide layer is the topmost layer of a plurality of layers including a resistive layer, and a protective layer selected from a passivation layer, a cavitation layer, and a combination of a passivation layer and a cavitation layer. The tantalum oxide layer has a thickness (t) that satisfies an equation t=(¼*W/n), wherein W is a wavelength of radiation from a radiation source, and n is a refractive index of the tantalum oxide layer. A photoimageable layer is also applied to the substrate. The photoimageable layer is imaged with the radiation source and then developed.Type: ApplicationFiled: May 25, 2010Publication date: September 16, 2010Inventors: Byron Vencent Bell, Christopher Allen Craft, Bryan Thomas Fannin, Burton Lee Joyner, II, Sean Terrence Weaver
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Patent number: 7784917Abstract: A method of making a micro-fluid ejection head structure and micro-fluid ejection heads made by the method. The method includes applying a tantalum oxide layer to a surface of a fluid ejection actuator disposed on a device surface of a substrate so that the tantalum oxide layer is the topmost layer of a plurality of layers including a resistive layer, and a protective layer selected from a passivation layer, a cavitation layer, and a combination of a passivation layer and a cavitation layer. The tantalum oxide layer has a thickness (t) that satisfies an equation t=(¼*W/n), wherein W is a wavelength of radiation from a radiation source, and n is a refractive index of the tantalum oxide layer. A photoimageable layer is also applied to the substrate. The photoimageable layer is imaged with the radiation source and then developed.Type: GrantFiled: October 3, 2007Date of Patent: August 31, 2010Assignee: Lexmark International, Inc.Inventors: Byron Vencent Bell, Christopher Allen Craft, Bryan Thomas Fannin, Burton Lee Joyner, II, Sean Terrence Weaver
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Publication number: 20100210759Abstract: Adhesive compositions, micro-fluid ejection devices, and methods for attaching micro-fluid ejection heads to devices. One such adhesive composition is provided for use in attaching a micro-fluid ejection head to a device, such as to reduce chip bowing and/or to decrease chip fragility upon curing of the adhesive. Such an exemplary composition may include one having from about 50.0 to about 95.0 percent by weight of at least one cross-linkable resin selected from the group consisting of epoxy resins, siloxane resins, urethane resins, and functionalized olefin resins; from about 0.1 to about 25.0 percent by weight of at least one thermal curative agent; and from about 0.0 to about 30.0 percent by weight filler, and exhibit a relatively low shear modulus upon curing (e.g., less than about 10.0 MPa at 25° C.).Type: ApplicationFiled: April 27, 2010Publication date: August 19, 2010Inventors: David Christopher Graham, Gary Anthony Holt, JR., Jonathan Harold Laurer, Johnny Dale Massie, II, Melissa Marie Waldeck, Sean Terrence Weaver, Rich Wells
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Publication number: 20100199497Abstract: Micro-fluid ejection heads and methods for fabricating micro-fluid ejection heads are provided, including those that use a non-conventional substrate and methods for making large array micro-fluid ejection heads. One such ejection head includes a substrate having a device surface with a plurality of fluid ejection actuator devices and a pocket disposed adjacent thereto. A chip associated with the plurality of fluid ejection actuator devices is attached in the chip pocket adjacent to the device surface of the substrate. A conductive material is deposited adjacent to the device surface of the substrate and in electrical communication with the chip.Type: ApplicationFiled: April 22, 2010Publication date: August 12, 2010Inventors: Frank Edward Anderson, Jeanne Marie Saldanha Singh, Carl Edmond Sullivan, Sean Terrence weaver
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Patent number: 7766455Abstract: Micro-fluid ejection head structures, methods of making micro-fluid ejection head structures having improved operability, and methods for improving the durability of micro-fluid ejection head structures are provided. One such micro-fluid ejection head structure includes a micro-fluid ejection head having a substrate and nozzle plate assembly adhesively attached adjacent to a substrate support using a substrate adhesive. The nozzle plate is adhesively attached adjacent to the substrate with a nozzle plate adhesive. A thermally, UV or other cure mechanism encapsulant material is attached adjacent to the ejection head and substrate support. Each of the substrate adhesive, and the encapsulant material, after curing, have a Young's modulus of less than about 2000 MPa, a shear modulus at 25° C. of less than about 15 MPa, and a glass transition temperature of less than about 90° C.Type: GrantFiled: November 3, 2006Date of Patent: August 3, 2010Assignee: Lexmark International, Inc.Inventors: David Christopher Graham, Brian Christopher Hart, Gary Anthony Holt, Jr., John William Krawczyk, Sean Terrence Weaver, Mary Claire Smoot
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Publication number: 20090091604Abstract: A method of making a micro-fluid ejection head structure and micro-fluid ejection heads made by the method. The method includes applying a tantalum oxide layer to a surface of a fluid ejection actuator disposed on a device surface of a substrate so that the tantalum oxide layer is the topmost layer of a plurality of layers including a resistive layer, and a protective layer selected from a passivation layer, a cavitation layer, and a combination of a passivation layer and a cavitation layer. The tantalum oxide layer has a thickness (t) that satisfies an equation t=(¼*W/n), wherein W is a wavelength of radiation from a radiation source, and n is a refractive index of the tantalum oxide layer. A photoimageable layer is also applied to the substrate. The photoimageable layer is imaged with the radiation source and then developed.Type: ApplicationFiled: October 3, 2007Publication date: April 9, 2009Inventors: Byron Vencent Bell, Christopher Allen Craft, Bryan Thomas Fannin, Burton Lee Joyner, II, Sean Terrence Weaver
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Publication number: 20090091600Abstract: A micro-fluid ejection head and methods for improving the fabrication and operation of the micro-fluid ejection head. The ejection head includes a photoimaged thick film layer attached to a substrate containing fluid ejection actuators. An orifice plate is laminated to the thick film layer. The orifice plate has a plurality of concentric orifices therein and is derived from a first photoresist material that is heated to a temperature sufficient to relieve film stresses in the photoresist material prior to exposing and developing the orifices in the orifice plate.Type: ApplicationFiled: October 4, 2007Publication date: April 9, 2009Inventors: Bryan Thomas Fannin, Vinod Kumar Gopalakrishnan, Christopher John Money, Sean Terrence Weaver
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Publication number: 20080079776Abstract: Micro-fluid ejection heads and methods for fabricating micro-fluid ejection heads are provided, including those that use a non-conventional substrate and methods for making large array micro-fluid ejection heads. One such ejection head includes a substrate having a device surface with a plurality of fluid ejection actuator devices and a pocket disposed adjacent thereto. A chip associated with the plurality of fluid ejection actuator devices is attached in the chip pocket adjacent to the device surface of the substrate. A conductive material is deposited adjacent to the device surface of the substrate and in electrical communication with the chip.Type: ApplicationFiled: September 28, 2006Publication date: April 3, 2008Inventors: Frank Edward Anderson, Jeanne Marie Saldanha Singh, Carl Edmond Sullivan, Sean Terrence Weaver
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Patent number: 6834937Abstract: A method for encapsulating electrical traces on a flexible circuit or TAB circuit and electrical connections between the flexible circuit or TAB circuit and a printhead substrate to inhibit ink corrosion thereof. The method includes applying a first adhesive to a first surface of the flexible circuit or TAB circuit. A second adhesive is applied to first surface of the flexible circuit or TAB circuit whereby the first and second adhesives effectively coat exposed portions of the traces and connections. The first and second adhesives are thermally curable epoxy compositions that are miscible with each other and the first adhesive has a first viscosity and first thixotropy index that is lower than a second viscosity second thixotropy index of the second adhesive. After applying the adhesive, the first and second adhesives are cured.Type: GrantFiled: August 13, 2002Date of Patent: December 28, 2004Assignee: Lexmark International, Inc.Inventors: Eric Louis Killmeier, Paul Timothy Spivey, Sean Terrence Weaver, Gary Raymond Williams
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Publication number: 20040032468Abstract: A method for encapsulating electrical traces on a flexible circuit or TAB circuit and electrical connections between the flexible circuit or TAB circuit and a printhead substrate to inhibit ink corrosion thereof. The method includes applying a first adhesive to a first surface of the flexible circuit or TAB circuit. A second adhesive is applied to first surface of the flexible circuit or TAB circuit whereby the first and second adhesives effectively coat exposed portions of the traces and connections. The first and second adhesives are thermally curable epoxy compositions that are miscible with each other and the first adhesive has a first viscosity and first thixotropy index that is lower than a second viscosity second thixotropy index of the second adhesive. After applying the adhesive, the first and second adhesives are cured.Type: ApplicationFiled: August 13, 2002Publication date: February 19, 2004Inventors: Eric Louis Killmeier, Paul Timothy Spivey, Sean Terrence Weaver, Gary Raymond Williams