Patents by Inventor John Robert Dunham
John Robert Dunham 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: 12646873Abstract: A dense, high-speed interconnection may be formed with a mating header and receptacle connector. The header connector may have groups of mating contact portions extending from the connector housing. Structural projections may extend from the housing adjacent some or all of the groups of mating contact portions. The groups of mating contact portions may be signal and ground mating contact portions associated with a signal pair. The groups may be arranged in an array and the structural projections may be arranged in an array intercalated with the array of the groups of mating contact portions. A receptacle connector may include an array of apertures configured to receive the structural projections. The structural projections may be shaped and positioned to reduce damage to the mating contact portions of the header connector, enable reliable manufacture, and to provide a high-density mating interface.Type: GrantFiled: December 9, 2022Date of Patent: June 2, 2026Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., John Robert Dunham, Mark W. Gailus, John Pitten, David Levine, Vysakh Sivarajan
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Publication number: 20260039039Abstract: An electrical interconnect for passing high speed signals through an electronic system with a high density of signals and high signal integrity. The interconnect includes an electrical connector and a transition portion of a printed circuit board to which the connector is mounted. Signal conductors are connected to pads on the surface of the PCB using edge-to-pad mounting. The pads align with intermediate portions of the signal conductors such that transitions within the connector that could degrade signal integrity are avoided. The signal conductors may be positioned as individually shielded broadside coupled pairs extending in rows within the connector. Surface traces on the PCB connect the pads to signal vias aligned for vertical routing out of the connector footprint. Ground planes underlying the surface traces facilitate a transition from the signal paths in the connector to those in the PCB with low mode conversion avoiding resonances in the connector shields.Type: ApplicationFiled: October 8, 2025Publication date: February 5, 2026Applicant: Amphenol CorporationInventors: John Robert Dunham, Marc B. Cartier, JR., Mark W. Gailus, David Levine, Allan Astbury, Vysakh Sivarajan, Daniel B. Provencher, Eric Leo
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Publication number: 20250329967Abstract: A modular electrical connector with broad-side coupled signal conductors in a right angle intermediate portion. Broadside coupling provides balanced pairs for very high frequency operation. The connector may be assembled with multiple subassemblies, each of which may have multiple pairs of signal conductors. The subassemblies may be formed from an insulative portion having grooves in opposite sides into which the intermediate portions of signal conductors. Covers, holding the signal conductors in the grooves, may establish the position of the signal conductors relative to reference conductors at the exterior of subassembly, so as to provide a controlled impedance. Lossy material may be positioned between the pairs in a subassembly and/or may contact the reference conductors of the subassemblies, and the lossy material of the subassemblies may in turn be connected with a conductive structure.Type: ApplicationFiled: May 9, 2025Publication date: October 23, 2025Applicant: Amphenol CorporationInventors: Marc B. Cartier, JR., John Robert Dunham, Mark W. Gailus, Donald A. Girard, JR., Brian Kirk, David Levine, Vysakh Sivarajan
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Patent number: 12444863Abstract: An electrical interconnect for passing high speed signals through an electronic system with a high density of signals and high signal integrity. The interconnect includes an electrical connector and a transition portion of a printed circuit board to which the connector is mounted. Signal conductors are connected to pads on the surface of the PCB using edge-to-pad mounting. The pads align with intermediate portions of the signal conductors such that transitions within the connector that could degrade signal integrity are avoided. The signal conductors may be positioned as individually shielded broadside coupled pairs extending in rows within the connector. Surface traces on the PCB connect the pads to signal vias aligned for vertical routing out of the connector footprint. Ground planes underlying the surface traces facilitate a transition from the signal paths in the connector to those in the PCB with low mode conversion avoiding resonances in the connector shields.Type: GrantFiled: April 24, 2023Date of Patent: October 14, 2025Assignee: Amphenol CorporationInventors: John Robert Dunham, Marc B. Cartier, Jr., Mark W. Gailus, David Levine, Allan Astbury, Vysakh Sivarajan, Daniel B. Provencher, Eric Leo
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Patent number: 12300942Abstract: A modular electrical connector with broad-side coupled signal conductors in a right angle intermediate portion. Broadside coupling provides balanced pairs for very high frequency operation. The connector is assembled with multiple subassemblies, each of which has multiple pairs of signal conductors. The subassemblies are formed from an insulative portion having grooves in opposite sides into which the intermediate portions of signal conductors. Covers, holding the signal conductors in the grooves, establish the position of the signal conductors relative to reference conductors at the exterior of subassembly, so as to provide a controlled impedance. Lossy material is positioned between the pairs in a subassembly and/or contacts the reference conductors of the subassemblies, and the lossy material of the subassemblies is in turn connected with a conductive structure.Type: GrantFiled: May 12, 2023Date of Patent: May 13, 2025Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., John Robert Dunham, Mark W. Gailus, Donald A. Girard, Jr., Brian Kirk, David Levine, Vysakh Sivarajan
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Publication number: 20250149819Abstract: A modular electrical connector with modular components suitable for assembly into a right angle connector may also be used in forming an orthogonal connector or connector in other desired configurations. The connector modules may be configured through the user of extender modules. Those connector modules may be held together as a right angle connector with a front housing portion, which, in some embodiments, may be shaped differently depending on whether the connector modules are used to form a right angle connector or an orthogonal connector. When designed to form an orthogonal connector, the extender modules may interlock into subarrays, which may be held to other connector components through the use of an extender shell. The mating contact portions on the extender modules may be such that a right angle connector, similarly made with connector modules, may directly mate with the orthogonal connector.Type: ApplicationFiled: January 13, 2025Publication date: May 8, 2025Applicant: Amphenol CorporationInventors: Allan Astbury, John Robert Dunham, Marc B. Cartier, JR., Mark W. Gailus, Daniel B. Provencher
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Publication number: 20250141160Abstract: A modular electrical connector with separately shielded signal conductor pairs. The connector may be assembled from modules, each containing a pair of signal conductors with surrounding partially or fully conductive material. Modules of different sizes may be assembled into wafers, which are then assembled into a connector. Wafers may include lossy material. In some embodiments, shielding members of two mating connectors may each have compliant members along their distal portions, such that, the shielding members engage at points of contact at multiple locations, some of which are adjacent the mating edge of each of the mating shielding members.Type: ApplicationFiled: December 6, 2024Publication date: May 1, 2025Applicant: Amphenol CorporationInventors: Marc B. Cartier, JR., John Robert Dunham, Mark W. Gailus, Donald A. Girard, JR., David Manter, Tom Pitten, Vysakh Sivarajan, Michael Joseph Snyder
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Publication number: 20250038435Abstract: A modular high speed, high density electrical connector configurable for use in multiple configurations, including a direct attach orthogonal configuration. The connector is assembled with modules that include shielded pairs of signal conductors with mating ends that are rotated approximately 45 degrees with respect to intermediate portions of the signal conductors. The connector may have a mating interface with receptacles in one connector and pins in the mating connector. The pins may be small diameter and may be implemented with superelastic wires so as to resist damage despite having very small effective diameter. A compact mating interface resulting from small diameter mating contact portions may enable other portions of the connector, including the shielding surrounding the signal conductors to be smaller, which may raise the resonant frequency of the connector and extend its bandwidth.Type: ApplicationFiled: August 2, 2024Publication date: January 30, 2025Applicant: Amphenol CorporationInventors: Marc B. Cartier, JR., John Robert Dunham, Mark W. Gailus, John Pitten
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Patent number: 12199373Abstract: A modular electrical connector with modular components suitable for assembly into a right angle connector may also be used in forming an orthogonal connector or connector in other desired configurations. The connector modules may be configured through the user of extender modules. Those connector modules may be held together as a right angle connector with a front housing portion, which, in some embodiments, may be shaped differently depending on whether the connector modules are used to form a right angle connector or an orthogonal connector. When designed to form an orthogonal connector, the extender modules may interlock into subarrays, which may be held to other connector components through the use of an extender shell. The mating contact portions on the extender modules may be such that a right angle connector, similarly made with connector modules, may directly mate with the orthogonal connector.Type: GrantFiled: June 12, 2023Date of Patent: January 14, 2025Assignee: Amphenol CorporationInventors: Allan Astbury, John Robert Dunham, Marc B. Cartier, Jr., Mark W. Gailus, Daniel B. Provencher
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Patent number: 12184012Abstract: A modular electrical connector with separately shielded signal conductor pairs. The connector may be assembled from modules, each containing a pair of signal conductors with surrounding partially or fully conductive material. Modules of different sizes may be assembled into wafers, which are then assembled into a connector. Wafers may include lossy material. In some embodiments, shielding members of two mating connectors may each have compliant members along their distal portions, such that, the shielding members engage at points of contact at multiple locations, some of which are adjacent the mating edge of each of the mating shielding members.Type: GrantFiled: June 15, 2023Date of Patent: December 31, 2024Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., John Robert Dunham, Mark W. Gailus, Donald A. Girard, Jr., David Manter, Tom Pitten, Vysakh Sivarajan, Michael Joseph Snyder
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Patent number: 12095218Abstract: A modular high speed, high density electrical connector configurable for use in multiple configurations, including a direct attach orthogonal configuration. The connector is assembled with modules that include shielded pairs of signal conductors with mating ends that are rotated approximately 45 degrees with respect to intermediate portions of the signal conductors. The connector may have a mating interface with receptacles in one connector and pins in the mating connector. The pins may be small diameter and may be implemented with superelastic wires so as to resist damage despite having very small effective diameter. A compact mating interface resulting from small diameter mating contact portions may enable other portions of the connector, including the shielding surrounding the signal conductors to be smaller, which may raise the resonant frequency of the connector and extend its bandwidth.Type: GrantFiled: June 22, 2023Date of Patent: September 17, 2024Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., John Robert Dunham, Mark W. Gailus, John Pitten
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Publication number: 20240097360Abstract: A modular high speed, high density electrical connector configurable for use in multiple configurations, including a direct attach orthogonal configuration. The connector is assembled with modules that include shielded pairs of signal conductors with mating ends that are rotated approximately 45 degrees with respect to intermediate portions of the signal conductors. The connector may have a mating interface with receptacles in one connector and pins in the mating connector. The pins may be small diameter and may be implemented with superelastic wires so as to resist damage despite having very small effective diameter. A compact mating interface resulting from small diameter mating contact portions may enable other portions of the connector, including the shielding surrounding the signal conductors to be smaller, which may raise the resonant frequency of the connector and extend its bandwidth.Type: ApplicationFiled: June 22, 2023Publication date: March 21, 2024Applicant: Amphenol CorporationInventors: Marc B. Cartier, JR., John Robert Dunham, Mark W. Gailus, John Pitten
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Publication number: 20240030660Abstract: A modular electrical connector with separately shielded signal conductor pairs. The connector may be assembled from modules, each containing a pair of signal conductors with surrounding partially or fully conductive material. Modules of different sizes may be assembled into wafers, which are then assembled into a connector. Wafers may include lossy material. In some embodiments, shielding members of two mating connectors may each have compliant members along their distal portions, such that, the shielding members engage at points of contact at multiple locations, some of which are adjacent the mating edge of each of the mating shielding members.Type: ApplicationFiled: June 15, 2023Publication date: January 25, 2024Applicant: Amphenol CorporationInventors: Marc B. Cartier, JR., John Robert Dunham, Mark W. Gailus, Donald A. Girard, JR., David Manter, Tom Pitten, Vysakh Sivarajan, Michael Joseph Snyder
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Publication number: 20240014609Abstract: A modular electrical connector with broad-side coupled signal conductors in a right angle intermediate portion. Broadside coupling provides balanced pairs for very high frequency operation. The connector may be assembled with multiple subassemblies, each of which may have multiple pairs of signal conductors. The subassemblies may be formed from an insulative portion having grooves in opposite sides into which the intermediate portions of signal conductors. Covers, holding the signal conductors in the grooves, may establish the position of the signal conductors relative to reference conductors at the exterior of subassembly, so as to provide a controlled impedance. Lossy material may be positioned between the pairs in a subassembly and/or may contact the reference conductors of the subassemblies, and the lossy material of the subassemblies may in turn be connected with a conductive structure.Type: ApplicationFiled: May 12, 2023Publication date: January 11, 2024Inventors: Marc B. Cartier, JR., John Robert Dunham, Mark W. Gailus, Donald A. Girard, JR., Brian Kirk, David Levine, Vysakh Sivarajan
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Publication number: 20230420874Abstract: An electrical interconnect for passing high speed signals through an electronic system with a high density of signals and high signal integrity. The interconnect includes an electrical connector and a transition portion of a printed circuit board to which the connector is mounted. Signal conductors are connected to pads on the surface of the PCB using edge-to-pad mounting. The pads align with intermediate portions of the signal conductors such that transitions within the connector that could degrade signal integrity are avoided. The signal conductors may be positioned as individually shielded broadside coupled pairs extending in rows within the connector. Surface traces on the PCB connect the pads to signal vias aligned for vertical routing out of the connector footprint. Ground planes underlying the surface traces facilitate a transition from the signal paths in the connector to those in the PCB with low mode conversion avoiding resonances in the connector shields.Type: ApplicationFiled: April 24, 2023Publication date: December 28, 2023Applicant: Amphenol CorporationInventors: John Robert Dunham, Marc B. Cartier, JR., Mark W. Gailus, David Levine, Allan Astbury, Vysakh Sivarajan, Daniel B. Provencher, Eric Leo
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Patent number: 11837814Abstract: A modular electrical connector with modular components suitable for assembly into a right angle connector may also be used in forming an orthogonal connector or connector in other desired configurations. The connector modules may be configured through the user of extender modules. Those connector modules may be held together as a right angle connector with a front housing portion, which, in some embodiments, may be shaped differently depending on whether the connector modules are used to form a right angle connector or an orthogonal connector. When designed to form an orthogonal connector, the extender modules may interlock into subarrays, which may be held to other connector components through the use of an extender shell. The mating contact portions on the extender modules may be such that a right angle connector, similarly made with connector modules, may directly mate with the orthogonal connector.Type: GrantFiled: December 28, 2020Date of Patent: December 5, 2023Assignee: Amphenol CorporationInventors: Allan Astbury, John Robert Dunham, Marc B. Cartier, Jr., Mark W. Gailus, Daniel B. Provencher
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Patent number: D1067191Type: GrantFiled: December 14, 2021Date of Patent: March 18, 2025Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., Mark W. Gailus, David Levine, Vysakh Sivarajan, John Robert Dunham, John Pitten
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Patent number: D1068685Type: GrantFiled: December 14, 2021Date of Patent: April 1, 2025Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., Mark W. Gailus, David Levine, Vysakh Sivarajan, John Robert Dunham, John Pitten
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Patent number: D1100851Type: GrantFiled: January 16, 2025Date of Patent: November 4, 2025Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., Mark W. Gailus, David Levine, Vysakh Sivarajan, John Robert Dunham, John Pitten
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Patent number: D1100852Type: GrantFiled: March 11, 2025Date of Patent: November 4, 2025Assignee: Amphenol CorporationInventors: Marc B. Cartier, Jr., Mark W. Gailus, David Levine, Vysakh Sivarajan, John Robert Dunham, John Pitten