Patents by Inventor Stephen A. Scearce
Stephen A. Scearce 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: 11277918Abstract: In one implementation, a multilayered printed circuit board is configured to redirect current distribution. The current may be distributed by steering, blocking, or otherwise manipulating current flows. The multilayered printed circuit board includes at least one power plane layer. The power plane layer does not distribute current evenly. Instead, the power plane layer includes multiple patterns with different resistances. The patterns may include a hatching pattern, a grid pattern, a directional pattern, a slot, a void, or a continuous pattern. The pattern is a predetermined spatial variation such that current flows in a first area differently than current flows in a second area.Type: GrantFiled: December 2, 2019Date of Patent: March 15, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
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Publication number: 20200107452Abstract: In one implementation, a multilayered printed circuit board is configured to redirect current distribution. The current may be distributed by steering, blocking, or otherwise manipulating current flows. The multilayered printed circuit board includes at least one power plane layer. The power plane layer does not distribute current evenly. Instead, the power plane layer includes multiple patterns with different resistances. The patterns may include a hatching pattern, a grid pattern, a directional pattern, a slot, a void, or a continuous pattern. The pattern is a predetermined spatial variation such that current flows in a first area differently than current flows in a second area.Type: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
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Patent number: 10548227Abstract: In one implementation, a multilayered printed circuit board is configured to redirect current distribution. The current may be distributed by steering, blocking, or otherwise manipulating current flows. The multilayered printed circuit board includes at least one power plane layer. The power plane layer does not distribute current evenly. Instead, the power plane layer includes multiple patterns with different resistances. The patterns may include a hatching pattern, a grid pattern, a directional pattern, a slot, a void, or a continuous pattern. The pattern is a predetermined spatial variation such that current flows in a first area differently than current flows in a second area.Type: GrantFiled: September 7, 2016Date of Patent: January 28, 2020Assignee: Cisco Technology, Inc.Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen Scearce
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Patent number: 9844135Abstract: Various implementations disclosed herein include arrangements that reduce parasitic inductance associated with a discrete decoupling capacitor by using a three-terminal capacitor and a staggered array of power supply and ground connections. In some implementations, a capacitive decoupling arrangement includes a substrate, an array of electrical vias of first and second types, and a capacitive arrangement on one side of the substrate coupled to the array of electrical vias. The array of electrical vias includes a first type of vias and a second type of vias. The capacitive arrangement is coupled between two respective vias of the first type of vias and two respective vias of the second type of vias on the first planar surface of the substrate. The capacitive arrangement includes a plurality of capacitive elements electrically arranged in parallel between the two respective vias of the first type of vias and the two respective vias of the second type of vias.Type: GrantFiled: September 8, 2014Date of Patent: December 12, 2017Assignee: CISCO TECHNOLOGY, INC.Inventors: Feng Wu, Yongchao Ji, Yang Tang, Stephen Scearce, Shunjia Liu, Shaochun Tang
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Publication number: 20160381807Abstract: In one implementation, a multilayered printed circuit board is configured to redirect current distribution. The current may be distributed by steering, blocking, or otherwise manipulating current flows. The multilayered printed circuit board includes at least one power plane layer. The power plane layer does not distribute current evenly. Instead, the power plane layer includes multiple patterns with different resistances. The patterns may include a hatching pattern, a grid pattern, a directional pattern, a slot, a void, or a continuous pattern. The pattern is a predetermined spatial variation such that current flows in a first area differently than current flows in a second area.Type: ApplicationFiled: September 7, 2016Publication date: December 29, 2016Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen Scearce
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Patent number: 9468090Abstract: In one implementation, a multilayered printed circuit board is configured to redirect current distribution. The current may be distributed by steering, blocking, or otherwise manipulating current flows. The multilayered printed circuit board includes at least one power plane layer. The power plane layer does not distribute current evenly. Instead, the power plane layer includes multiple patterns with different resistances. The patterns may include a hatching pattern, a grid pattern, a directional pattern, a slot, a void, or a continuous pattern. The pattern is a predetermined spatial variation such that current flows in a first area differently than current flows in a second area.Type: GrantFiled: October 29, 2012Date of Patent: October 11, 2016Assignee: Cisco Technology, Inc.Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
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Publication number: 20160073500Abstract: Various implementations disclosed herein include arrangements that reduce parasitic inductance associated with a discrete decoupling capacitor by using a three-terminal capacitor and a staggered array of power supply and ground connections. In some implementations, a capacitive decoupling arrangement includes a substrate, an array of electrical vias of first and second types, and a capacitive arrangement on one side of the substrate coupled to the array of electrical vias. The array of electrical vias includes a first type of vias and a second type of vias. The capacitive arrangement is coupled between two respective vias of the first type of vias and two respective vias of the second type of vias on the first planar surface of the substrate. The capacitive arrangement includes a plurality of capacitive elements electrically arranged in parallel between the two respective vias of the first type of vias and the two respective vias of the second type of vias.Type: ApplicationFiled: September 8, 2014Publication date: March 10, 2016Inventors: Feng Wu, Yongchao Ji, Yang Tang, Stephen Scearce, Shunjia Liu, Shaochun Tang
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Publication number: 20140118962Abstract: In one implementation, a multilayered printed circuit board is configured to redirect current distribution. The current may be distributed by steering, blocking, or otherwise manipulating current flows. The multilayered printed circuit board includes at least one power plane layer. The power plane layer does not distribute current evenly. Instead, the power plane layer includes multiple patterns with different resistances. The patterns may include a hatching pattern, a grid pattern, a directional pattern, a slot, a void, or a continuous pattern. The pattern is a predetermined spatial variation such that current flows in a first area differently than current flows in a second area.Type: ApplicationFiled: October 29, 2012Publication date: May 1, 2014Applicant: CISCO TECHNOLOGY, INC.Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
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Patent number: 7285022Abstract: A network device includes card slots and Network Module slots that be reconfigured to hold cards and network modules having different form factors.Type: GrantFiled: September 18, 2006Date of Patent: October 23, 2007Assignee: Cisco Technology, Inc.Inventors: Helen Shtargot, Shawn Bender, William J. Lewis, Lwin Tint, David Tarkington, Ming Chi Chen, Rene Duzac, James Everett Grishaw, Torence Lu, Kimberly Rae Turner, Phong Hoang Ho, Robert A. Loose, Stephen Scearce, Terri Cruse
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Publication number: 20070014093Abstract: A network device includes card slots and Network Module slots that be reconfigured to hold cards and network modules having different form factors.Type: ApplicationFiled: September 18, 2006Publication date: January 18, 2007Inventors: Helen Shtargot, Shawn Bender, William Lewis, Lwin Tint, David Tarkington, Ming Chen, Rene Duzac, James Grishaw, Torence Lu, Kimberly Turner, Phong Ho, Robert Loose, Stephen Scearce, Terri Cruse
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Patent number: 7108559Abstract: A router includes WIC and Network Module slots that be reconfigured to hold cards and network modules having different form factors. A motherboard/midplane arrangement provides for a field replaceable motherboard that can be replaced without removing the router from the rack.Type: GrantFiled: December 21, 2004Date of Patent: September 19, 2006Assignee: Cisco Technology, INc.Inventors: Helen Shtargot, Dattatri Mattur, Shawn Bender, William J. Lewis, Lwin Tint, David Tarkington, Ming Chi Chen, Rene Duzac, James Everett Grishaw, Torence Lu, Kimberly Rae Turner, Phong Hoang Ho, Robert A. Loose, Stephen Scearce
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Patent number: 7054127Abstract: A cable device includes an integrated surge protection circuit. In the event that, communication signals conveyed by the cable include (potentially damaging) transient voltages, the surge protection circuit integrated in the cable suppresses the transient voltages at a distance from a corresponding electronic circuit to which the cable is attached. Consequently, potentially damaging voltage transients imparted on the communication signals are clamped before reaching potentially sensitive inputs of the electronic circuit.Type: GrantFiled: June 18, 2003Date of Patent: May 30, 2006Assignee: Cisco Technology, Inc.Inventors: Stephen A. Scearce, Pongsak Sriwudhthanun, James C. Q. Tran
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Publication number: 20050117282Abstract: A router includes WIC and Network Module slots that be reconfigured to hold cards and network modules having different form factors. A motherboard/midplane arrangement provides for a field replaceable motherboard that can be replaced without removing the router from the rack.Type: ApplicationFiled: December 21, 2004Publication date: June 2, 2005Inventors: Helen Shtargot, Dattatri Mattur, Shawn Bender, William Lewis, Lwin Tint, David Tarkington, Ming Chen, Rene Duzac, James Grishaw, Torence Lu, Kimberly Turner, Phong Ho, Robert Loose, Stephen Scearce