Patents by Inventor Luis Trejo

Luis Trejo 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).

  • Method for controlling wire balls in electronic bonding
    Patent number: 6898849
    Abstract: A method for forming a substantially spherical free air ball on a fine non-oxidizable wire in a computerized bonder, which has a computerized flame-off (EFO) apparatus operable to generate pulses of different heights and widths. A train of EFO current pulses is applied between electrode and wire; examples are shown in FIGS. 8 and 9. The pulse heights are controlled to melt a predetermined volume of wire while minimizing the heat-affected zone of the wire as well as the wire necking, thus creating free air balls of small diameters and high ball/wire strength. The pulse widths are controlled to create a substantially spherical ball shape. The pulse train of various heights and widths is minimized in order to minimize the time needed for one bond and to maximize the number of bonds provided per second.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: May 31, 2005
    Assignee: Texas Instruments Incorporated
    Inventor: Luis Trejo
  • Method for controlling wire balls in electronic bonding
    Publication number: 20020056706
    Abstract: A method for forming a substantially spherical free air ball on a fine non-oxidizable wire in a computerized bonder, which has a computerized flame-off (EFO) apparatus operable to generate pulses of different heights and widths. A train of EFO current pulses is applied between electrode and wire; examples are shown in FIGS. 8 and 9. The pulse heights are controlled to melt a predetermined volume of wire while minimizing the heat-affected zone of the wire as well as the wire necking, thus creating free air balls of small diameters and high ball/wire strength. The pulse widths are controlled to create a substantially spherical ball shape. The pulse train of various heights and widths is minimized in order to minimize the time needed for one bond and to maximize the number of bonds provided per second.
    Type: Application
    Filed: September 21, 2001
    Publication date: May 16, 2002
    Inventor: Luis Trejo
  • Runner to bicycle connecting device
    Patent number: 5580069
    Abstract: A shaped tubular member connects a runner to a riderless bicycle. The runner attaches the tubular member to the bicycle and then attaches the waist belt clasp to the tubular member. With no hands on the bicycle, the runner accelerates forward and the riderless bicycle follows at the same speed. The tubular member is allowed to move up and down with the stride of the runner. The tubular member is of breakdown construction for ease in transportation as the runner continues the exercise on the bicycle.
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: December 3, 1996
    Inventors: Luis Trejo, Edward J. Vargas