Patents by Inventor Robert W. Teichner

Robert W. Teichner 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).

  • Optical isolator with encapsulation
    Patent number: 5148243
    Abstract: An optical isolator is fabricated upon a lead frame having an LED section which is rotated 180.degree. to position the LED over the photodiode. Prior to rotation both the LED and the photodiode attachment portions of the leads are down set a predetermined amount to fix the size of the isolation gap between the LED and the photodiode. Dielectric sheets are attached to the outer surfaces of the LED and photodiode leads and an optically transmissive resin is injected therebetween to form a light guide and to encapsulate the LED and photodiode dice and their associated bond wires. In an alternate embodiment a sheet is attached to the outer surface of one lead and a dielectric sheet thereagainst is positioned at a tilted angle between the LED and the photodiode.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: September 15, 1992
    Assignee: Hewlett-Packard Company
    Inventors: Stephen P. Merrick, Robert W. Teichner
  • Optical isolator
    Patent number: 5049527
    Abstract: An optical isolator is fabricated upon a lead frame having an LED section which is rotated 180.degree. to position the LED over the photodiode. Prior to rotation both the LED and the photodiode attachment portions (81,83) of the leads are down set a predetermined amount to fix the size of the isolation gap between the LED and the photodiode. Dielectric sheets are attached to the outer surfaces of the LED and photodiode leads and an optically transmissive resin is injected therebetween to form a light guide and to encapsulate the LED and photodiode dice and their associated bond wires. In an alternate embodiment a sheet is attached to the outer surface of one lead and a dielectric sheet thereagainst is positioned at a tilted angle between the LED and the photodiode.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: September 17, 1991
    Assignee: Hewlett-Packard Company
    Inventors: Stephen P. Merrick, Robert W. Teichner
  • Optical isolator
    Patent number: 4863806
    Abstract: An optical isolator is fabricated upon a lead frame having an LED section which is rotated 180.degree. to position the LED over the photodiode. Prior to rotation both the LED and the photodiode attachment portions of the leads are down set a predetermined amount to fix the size of the isolation gap between the LED and the photodiode. Dielectric sheets are attached to the outer surfaces of the LED and photodiode leads and an optically transmissive resin is injected therebetween to form a light guide and to encapsulate the LED and photodiode dice and their associated bond wires. In an alternate embodiment a sheet is attached to the outer surface of one lead and a dielectric sheet thereagainst is positioned at a tilted angle between the LED and the photodiode.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: September 5, 1989
    Assignee: Hewlett-Packard Company
    Inventors: Stephen P. Merrick, Robert W. Teichner
  • Optical isolator fabricated upon a lead frame
    Patent number: 4694183
    Abstract: An optical isolator is fabricated upon a lead frame having an LED section which is rotated 180.degree. to position the LED over the photodiode. Prior to rotation both the LED and the photodiode attachment portions of the leads are down set a predetermined amount to fix the size of the isolation gap between the LED and the photodiode. Dielectric sheets are attached to the outer surfaces of the LED and photodiode leads and an optically transmissive resin is injected therebetween a form a light guide and to encapsulate the LED and photodiode dice and their associated bond wires. In an alternate embodiment a sheet is attached to the outer surface of one lead and a dielectric sheet thereagainst is positioned at a tilted angle between the LED and the photodiode.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: September 15, 1987
    Assignee: Hewlett-Packard Company
    Inventors: Stephen P. Merrick, Robert W. Teichner