Patents by Inventor Bradley N. Lange

Bradley N. Lange 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).

  • Semiconductor testing and apparatus therefor
    Patent number: 4746856
    Abstract: A semiconductor die is positioned and examined by means of scanning certain strategic regions which border or overlap said die. The video which results from the scanning is digitized. For example, black is represented by an "0" and white is represented by a "1". The results may be compared with an acceptable pattern to determine a good die and statistically analyzed to see if the data represents the die or surrounding street.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: May 24, 1988
    Assignee: Advanced Semiconductor Materials America, Inc.
    Inventors: Laurence L. Allred, Jr., Bradley N. Lange
  • Semiconductor testing and apparatus therefor
    Patent number: 4520313
    Abstract: A semiconductor die is positioned and examined by means of scanning certain strategic regions which border or overlap said die. The video which results from the scanning is digitized. For example, black is represented by an "0" and white is represented by a "1". The results may be compared with an acceptable pattern to determine a good die and statistically analyzed to see if the data represents the die or surrounding street.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: May 28, 1985
    Assignee: Advanced Semiconductor Materials America, Inc.
    Inventors: Laurence L. Allred, Jr., Bradley N. Lange
  • Object detection apparatus and method
    Patent number: 4451197
    Abstract: This disclosure relates to an object detector which incorporates a photoelectric detector in the vacuum flow path of a vacuum pickup system to serve as a device to determine whether an object has been successfully engaged, retained and transported by a vacuum orifice, so that transport cycles may be modified or terminated by control circuitry in the event that the object has not been successfully engaged, retained and transported, thereby saving time and reducing damage to object, transport means or the surface to which the object is transported.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: May 29, 1984
    Assignee: Advanced Semiconductor Materials Die Bonding, Inc.
    Inventor: Bradley N. Lange