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).

  • Patent number: 11277918
    Abstract: 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: Grant
    Filed: December 2, 2019
    Date of Patent: March 15, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
  • Publication number: 20200107452
    Abstract: 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: Application
    Filed: December 2, 2019
    Publication date: April 2, 2020
    Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
  • Patent number: 10548227
    Abstract: 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: Grant
    Filed: September 7, 2016
    Date of Patent: January 28, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen Scearce
  • Patent number: 9844135
    Abstract: 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: Grant
    Filed: September 8, 2014
    Date of Patent: December 12, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Feng Wu, Yongchao Ji, Yang Tang, Stephen Scearce, Shunjia Liu, Shaochun Tang
  • Publication number: 20160381807
    Abstract: 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: Application
    Filed: September 7, 2016
    Publication date: December 29, 2016
    Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen Scearce
  • Patent number: 9468090
    Abstract: 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: Grant
    Filed: October 29, 2012
    Date of Patent: October 11, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
  • Publication number: 20160073500
    Abstract: 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: Application
    Filed: September 8, 2014
    Publication date: March 10, 2016
    Inventors: Feng Wu, Yongchao Ji, Yang Tang, Stephen Scearce, Shunjia Liu, Shaochun Tang
  • Publication number: 20140118962
    Abstract: 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: Application
    Filed: October 29, 2012
    Publication date: May 1, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Goutham Sabavat, Javid Mohamed, Subramanian Ramanathan, Stephen A. Scearce
  • Patent number: 7285022
    Abstract: A network device includes card slots and Network Module slots that be reconfigured to hold cards and network modules having different form factors.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: October 23, 2007
    Assignee: 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
  • Publication number: 20070014093
    Abstract: A network device includes card slots and Network Module slots that be reconfigured to hold cards and network modules having different form factors.
    Type: Application
    Filed: September 18, 2006
    Publication date: January 18, 2007
    Inventors: 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
  • Patent number: 7108559
    Abstract: 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: Grant
    Filed: December 21, 2004
    Date of Patent: September 19, 2006
    Assignee: 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
  • Patent number: 7054127
    Abstract: 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: Grant
    Filed: June 18, 2003
    Date of Patent: May 30, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Stephen A. Scearce, Pongsak Sriwudhthanun, James C. Q. Tran
  • Publication number: 20050117282
    Abstract: 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: Application
    Filed: December 21, 2004
    Publication date: June 2, 2005
    Inventors: 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