Patents by Inventor Saujit Bandhu

Saujit Bandhu 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).

  • Publication number: 20200313323
    Abstract: An electrical connector provides electrical connection between first, second, and third printed circuit boards (PCBs). The connector defines spaced apart substantially parallel, first, second and third mating slots and includes a plurality of pairs of first terminals and a plurality of pairs of second terminals. For each pair of first terminals: the first terminals are electrically connected to each other; one of the first terminals is disposed in the first mating slot; and the other of the first terminals is disposed in the third mating slot. For each pair of second terminals: the second terminals are electrically isolated from each other; one of the second terminals is disposed in the second mating slot; and the other of the second terminals is disposed in the third mating slot.
    Type: Application
    Filed: May 1, 2017
    Publication date: October 1, 2020
    Inventors: YunLong Qiao, Saujit Bandhu, Johannes P.M. Kusters
  • Patent number: 10770858
    Abstract: A pick and place cap is configured to facilitate picking and placing a connector when the cap is assembled to the connector. The cap includes a top wall having a first engaging feature for engaging a back side of the connector, and opposing side walls each having a second engaging feature for engaging a bottom portion of the connector. The cap is configured to be assembled to and unassembled from the connector along each of two mutually orthogonal directions.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: September 8, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Rao L. Vittapalli, Kok Hoe Lee, Yunlong Qiao, Saujit Bandhu
  • Publication number: 20200266591
    Abstract: Electrical connectors are described. More particularly, electrical connectors including a plurality of contacts are described. Both connector plugs and sockets are described. Electrical connectors that are suitable for mounting on a printed circuit board and electrical connectors that include a printed circuit board are described.
    Type: Application
    Filed: May 5, 2020
    Publication date: August 20, 2020
    Inventors: YunLong Qiao, Rao L. Vittapalli, Saujit Bandhu, Vincent Tan, Kok Hoe Lee, Chin Hua Lim
  • Publication number: 20200243993
    Abstract: In a specific embodiment, a connector 100 is disclosed. The connector 100 comprises an insulative housing 102 defining a rear opening 108 for receiving a plurality of electrical wires 110 and a front opening 106 and a circuit board 104 disposed in the housing 102 and comprising a mating section 112 for mating with a corresponding mating section of a mating connector. The mating section 112 protrudes outwardly from the front opening 106 and terminates at a front edge 118 disposed between opposing side edges 114,116 of the mating section 112.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Inventors: Kok Hoe Lee, Saujit Bandhu, YunLong Qiao, Rao L. Vittapalli, Chin Hua Lim
  • Patent number: 10727620
    Abstract: A connector assembly includes first and second connectors. Each connector includes a plurality of terminals A1 through An, n is an integer ?2, sequentially arranged in a row. The connector assembly also includes a flat cable that includes a plurality of electrical conductors electrically connecting the terminals of the first and second connectors. For each i from 1 to n, terminal Ai of the first connector is electrically connected, via a different electrical conductor of the cable, to the terminal Ai of the second connector. The cable includes a bend greater than about 150° around at least two fold lines that extend across the entire width of the cable. Each of the first and second connectors is configured to mate with the same mating connector, such that when each of the first and second connectors mates with the same mating connector in a same plan view, the An terminals are both either on a left or a right side of the A1 terminals.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 28, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Rao L. Vittapalli, Kok Hoe Lee, YunLong Qiao, Chin Hua Lim, Saujit Bandhu
  • Patent number: 10700452
    Abstract: An electrically conductive terminal generally extends along a first direction and includes a straight middle portion, a resiliently compressible mating portion extending from a first end of the middle portion for making contact with a conductive pad, and a terminating portion extending from a second end of the middle portion for making contact to a plurality of wires. The terminating portion includes a plurality of electrically connected segments separated by one or more walls and is configured to receive conductive ends of the plurality of wires in a one-to-one correspondence relationship. The terminating portion electrically connects the received wires.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: June 30, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Kok Hoe Lee, Saujit Bandhu, YunLong Qiao
  • Patent number: 10673188
    Abstract: Electrical connectors are described. More particularly, electrical connectors including a plurality of contacts are described. Both connector plugs and sockets are described. Electrical connectors that are suitable for mounting on a printed circuit board and electrical connectors that include a printed circuit board are described.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: June 2, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: YunLong Qiao, Rao L. Vittapalli, Saujit Bandhu, Vincent Tan, Kok Hoe Lee, Chin Hua Lim
  • Publication number: 20200161781
    Abstract: A connector assembly includes, a housing, a circuit board that includes a conductive front pad and a conductive rear pad electrically connected to the front pad, and a cable that includes an insulated conductor having a conductor surrounded by an insulating material. The conductor has a diameter not greater than 24 AWG. The uninsulated front end of the conductor is terminated at the rear pad and includes a preformed bend. The connector assembly also includes a recess formed in an external surface and on a lateral side of the housing. The recess is designed to receive and house a spring member of a pull tab that is assembled to the housing. The vertical separation between the recess and the circuit board is h, the average thickness of the cable is t, and h?3t.
    Type: Application
    Filed: October 29, 2019
    Publication date: May 21, 2020
    Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Vincent Tan
  • Patent number: 10651582
    Abstract: In a specific embodiment, a connector 100 is disclosed. The connector 100 comprises an insulative housing 102 defining a rear opening 108 for receiving a plurality of electrical wires 110 and a front opening 106 and a circuit board 104 disposed in the housing 102 and comprising a mating section 112 for mating with a corresponding mating section of a mating connector. The mating section 112 protrudes outwardly from the front opening 106 and terminates at a front edge 118 disposed between opposing side edges 114,116 of the mating section 112.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: May 12, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kok Hoe Lee, Saujit Bandhu, YunLong Qiao, Rao L. Vittapalli, Chin Hua Lim
  • Patent number: 10581189
    Abstract: The present invention relates to cable-to-board connectors for fine pitch, high speed connector assemblies. The exemplary connector assembly includes an insulative housing, a plurality of first contacts disposed in the housing wherein at least a portion of the contacts are adapted to terminate at a conductive trace on a printed circuit board and a first cable comprising a plurality of first wires. Each of the first contacts has a first mating portion for making electrical contact with a corresponding contact of a mating connector; and a first terminal portion extending along a housing bottom wherein the first terminal portion is adapted to terminate at a conductive trace on a printed circuit board. In the exemplary cable assembly, each first wire of the first cable is terminated at the first terminal portion of a different first contact.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: March 3, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: YunLong Qiao, Saujit Bandhu, Chin Hua Lim
  • Publication number: 20200052453
    Abstract: A pick and place cap is configured to facilitate picking and placing a connector when the cap is assembled to the connector. The cap includes a top wall having a first engaging feature for engaging a back side of the connector, and opposing side walls each having a second engaging feature for engaging a bottom portion of the connector. The cap is configured to be assembled to and unassembled from the connector along each of two mutually orthogonal directions.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 13, 2020
    Inventors: Rao L. Vittapalli, Kok Hoe Lee, Yunlong Qiao, Saujit Bandhu
  • Patent number: 10535939
    Abstract: A connector assembly including a connector and first and second cables is described. The connector includes an insulative housing and a circuit board partially disposed in the housing. The circuit board includes a mating section and a termination section. The mating section includes a plurality of first contact pads and the termination section includes a plurality of second contact pads electrically connected to the first contact pads. The first and second cables include conductors having front ends terminated at the second contact pads. The housing is overmolded onto and encapsulates at least the front ends of the conductors and the termination section of the circuit board. The circuit board includes a back surface at a rear end of the circuit board and the housing includes a back surface at a cable end of the housing which may be substantially coplanar with the back surface of the circuit board.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: January 14, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: YunLong Qiao, Saujit Bandhu, Vincent Tan, Kok Hoe Lee
  • Publication number: 20190379158
    Abstract: Connectors or connector assemblies include first and second latching members attached to a housing thereof for latching the connector to a mating connector are provided. When the connector mates with the mating connector in a first/second mating orientation, the first/second latching member, but not the second/first latching member latches the connector to the mating connector.
    Type: Application
    Filed: December 18, 2017
    Publication date: December 12, 2019
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kok Hoe Lee, Saujit Bandhu
  • Publication number: 20190372249
    Abstract: An elongated connector includes a circuit board and a connector frame removably attached to the circuit board. First contact pads and second contact pads are integrally formed on a top surface and near a front edge of the circuit board. A first opening is disposed at the front edge of the circuit board on a side of a first region. A second opening is disposed at the front edge of the circuit board on an opposite side of a second region. The elongated base is disposed on the top surface of the circuit board behind the first and second regions. When the connector mates with a mating connector, the first and second regions of the circuit board are inserted in the mating connector and each contact pad in the pluralities of first and second contact pads makes contact with a corresponding contact of the mating connector.
    Type: Application
    Filed: December 18, 2017
    Publication date: December 5, 2019
    Inventors: YunLong Qiao, Saujit Bandhu, Kok Hoe Lee, Chin Hua Lim, Rao L. Vittapalli
  • Publication number: 20190348779
    Abstract: An electrically conductive terminal generally extends along a first direction and includes a straight middle portion, a resiliently compressible mating portion extending from a first end of the middle portion for making contact with a conductive pad, and a terminating portion extending from a second end of the middle portion for making contact to a plurality of wires. The terminating portion includes a plurality of electrically connected segments separated by one or more walls and is configured to receive conductive ends of the plurality of wires in a one-to-one correspondence relationship. The terminating portion electrically connects the received wires.
    Type: Application
    Filed: May 13, 2019
    Publication date: November 14, 2019
    Inventors: Kok Hoe Lee, Saujit Bandhu, YunLong Qiao
  • Publication number: 20190288435
    Abstract: An electrically conductive contact of an electrical connector includes an L-shaped main body comprising first and second legs connected at a junction. The first leg is configured to make physical and electrical contact with a first electric conductor. The contact includes an elongated resiliently flexible arm extending from an end of the second leg toward the junction and making an acute angle with the second leg at the end of the second leg. The flexible arm is configured to make solderless contact with a second electric conductor by pressing against the second electric conductor and resiliently flexing toward the second leg.
    Type: Application
    Filed: December 18, 2017
    Publication date: September 19, 2019
    Inventors: Kok Hoe Lee, Saujit Bandhu, Chin Hua Lim, Rao L. Vittapalli, YunLong Qiao
  • Patent number: 10386589
    Abstract: The present invention relates to a hybrid connector. The connector comprises an insulating housing having parallel rows of first and second terminals disposed in the housing. Each first and second terminal includes a terminal portion configured to make contact with an electrically conductive trace of a circuit board; and a mating portion configured to contact a terminal of a mating connector, the mating portions of the first terminals parallel to and facing the mating portions of the second terminals. The housing defines a cavity formed therein between the mating portions of the first and second terminals, wherein the cavity defining a cavity opening at an external surface of the housing for receiving light therefrom. An optical relay portion is disposed in the cavity, wherein the optical relay portion comprises at least one of an optical transceiver, an optical lens and an optical waveguide.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: August 20, 2019
    Assignee: 3M Innovation Properties Company
    Inventors: Terry L. Smith, Saujit Bandhu, YunLong Qiao, Chin Hua Lim, Barry J. Koch
  • Publication number: 20190199021
    Abstract: A connector assembly includes first and second connectors. Each connector includes a plurality of terminals A1 through An, n is an integer?2, sequentially arranged in a row. The connector assembly also includes a flat cable that includes a plurality of electrical conductors electrically connecting the terminals of the first and second connectors. For each i from 1 to n, terminal Ai of the first connector is electrically connected, via a different electrical conductor of the cable, to the terminal Ai of the second connector. The cable includes a bend greater than about 150° around at least two fold lines that extend across the entire width of the cable. Each of the first and second connectors is configured to mate with the same mating connector, such that when each of the first and second connectors mates with the same mating connector in a same plan view, the An terminals are both either on a left or a right side of the A1 terminals.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 27, 2019
    Inventors: Rao L. Vittapalli, Kok Hoe Lee, YunLong Qiao, Chin Hua Lim, Saujit Bandhu
  • Patent number: 10297949
    Abstract: Connector assemblies are disclosed. More particularly, connector assemblies including a housing with an inclined wall are disclosed. The inclined wall helps maintain a folded flat cable by contacting substantially its entire fold edge. The housing with the inclined wall may be removably attached to the rest of the connector assembly.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 21, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Kok Hoe Lee, Saujit Bandhu, Dennis L. Doye, YunLong Qiao
  • Patent number: D907578
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: January 12, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: YunLong Qiao, Saujit Bandhu, Vincent Tan, Kok Hoe Lee