Patents by Inventor Keda Wang

Keda Wang 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: 20070175588
    Abstract: System and method for the plasma treatment of parts. The system and method involve energizing horizontal and vertical electrodes within a treatment chamber to generate a plasma used to treat the parts.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 2, 2007
    Applicant: NORDSON CORPORATION
    Inventors: Louis Rigali, David Hoffman, Keda Wang, William Smith
  • Patent number: 7201823
    Abstract: A method for the plasma treatment of parts. The method includes sending loading signals from an electronic control to a transfer mechanism and loading the parts from a position outside of the treatment chamber to a plurality of treatment positions within the treatment chamber based on the loading signals. A plasma is generated within the treatment chamber to treat the parts. After treatment, unloading signals are sent from the electronic control to the transfer mechanism and the parts are unloaded from the treatment chamber based on the unloading signals. Each of the parts may be guided to a corresponding one of the treatment positions during loading.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: April 10, 2007
    Assignee: Nordson Corporation
    Inventors: Louis A. Rigali, David E. Hoffman, Keda Wang, William F. Smith, III
  • Publication number: 20050039853
    Abstract: A method for the plasma treatment of parts. The method includes sending loading signals from an electronic control to a transfer mechanism and loading the parts from a position outside of the treatment chamber to a plurality of treatment positions within the treatment chamber based on the loading signals. A plasma is generated within the treatment chamber to treat the parts. After treatment, unloading signals are sent from the electronic control to the transfer mechanism and the parts are unloaded from the treatment chamber based on the unloading signals. Each of the parts may be guided to a corresponding one of the treatment positions during loading.
    Type: Application
    Filed: September 29, 2004
    Publication date: February 24, 2005
    Applicant: Nordson Corporation
    Inventors: Louis Rigali, David Hoffman, Keda Wang, William Smith
  • Publication number: 20040211516
    Abstract: A system and method for the simultaneous plasma treatment of a plurality of parts in a treatment chamber. The system includes a transfer mechanism that is operable to load the plurality of parts at a plurality of treatment positions within the treatment chamber. The operation of the transfer mechanism is controlled by signals from an electronic control system. A guide is provided, either within the treatment chamber or outside the treatment chamber, along which each of the parts may be moved to the plurality of treatment positions. The guides may be arranged in multiple levels so that the treatment positions for the plurality of parts may be likewise arranged in multiple levels.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 28, 2004
    Applicant: Nordson Corporation
    Inventors: Louis A. Rigali, David E. Hoffman, Keda Wang, William F. Smith
  • Patent number: 6808592
    Abstract: A system for the plasma treatment of parts. The system includes a chamber base sealingly engageable with a reaction chamber to form a treatment chamber and a lifting device operable to lift the reaction chamber from the chamber base. A transfer mechanism is operable to transfer parts along a guide to multiple treatment positions within the treatment chamber when the reaction chamber is disengaged from the chamber base. An electronic control system controls the transfer mechanism for transferring the plurality of parts to the treatment positions. The parts are treated with a plasma produced within the treatment chamber by a plasma-generating device.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: October 26, 2004
    Assignee: Nordson Corporation
    Inventors: Louis A. Rigali, David E. Hoffman, Keda Wang, William F. Smith, III
  • Patent number: 6245189
    Abstract: A plasma treatment system (10) is provided having an automated, in-line processing ability. The preferred embodiment is directed toward plasma treatment of PC boards (28) but is generally applicable to any substrate susceptible of plasma reaction. The plasma treatment system (10) has the primary components of a reaction chamber (14) and chamber base (16), a chamber lifting assembly (18), a conveyor input assembly (12), a push mechanism (20) and associated linear drive assembly (22), an output assembly (24), an electronic control system (26), and a vacuum and plasma generating system (27). Each of the conveyor input assembly (22), reaction chamber (14), and output assembly (24) include pairs of guide rails (34, 52, and 106, respectively) which are capable of being juxtaposably aligned relative to one another and upon which the PC boards (28) may guideably and sideably travel. The push mechanism 20 effectuates both movement and positioning of the PC boards (28) along the guide rails (34, 52, and 106).
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: June 12, 2001
    Assignee: Nordson Corporation
    Inventors: Louis A. Rigali, David E. Hoffman, Keda Wang