Patents by Inventor Rolland R. Hackbart

Rolland R. Hackbart 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).

  • Communication device having multiple displays and method of operating the same
    Patent number: 6304763
    Abstract: A portable communication device (102) includes a housing (105), a first display area (130), and a second display area (132). The first display area (130) is disposed in and outwardly directed from a front (120) of the housing (105), and the second display area (132) is disposed in and outwardly directed from a side (122) of the housing (105). The housing (105) may include a housing portion (114) movable to an open position and a closed position, where the second display area (132) is covered by the housing portion (114) when positioned in one of the first and the second positions.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: October 16, 2001
    Assignee: Motorola, Inc.
    Inventors: Ketan R. Jahagirdar, William P. Alberth, Jr., Rolland R. Hackbart, Rashid M. Osmani, Stephen V. Cahill
  • Communication device having multiple displays and method of operating the same
    Patent number: 6125286
    Abstract: A portable communication device (102) includes a housing (105), a first display area (130), and a second display area (132). The first display area (130) is outwardly directed from a side (122) of the housing (105), and the second display area (132) is outwardly directed from a front (120) of the housing (105). The housing (105) may include a housing portion (114) movable to an open position and a closed position, where the second display area (132) is covered by the housing portion (114) when positioned in one of the first and the second positions.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: September 26, 2000
    Assignee: Motorola, Inc.
    Inventors: Ketan R. Jahagirdar, William P. Alberth, Jr., Rolland R. Hackbart, Rashid M. Osmani, Stephen V. Cahill
  • Capacitive power supply
    Patent number: 5187640
    Abstract: A capacitive power supply for powering a portable electrical device, such as a radiotelephone. The capacitive power supply is comprised of capacitors stacked vertically in a series connection of capacitive values capable of generating currents of levels great enough to power a radiotelephone for an extended period of time.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: February 16, 1993
    Assignee: Motorola, Inc.
    Inventors: Michael P. Metroka, Rolland R. Hackbart
  • Capacitive power supply
    Patent number: 5121288
    Abstract: A capacative power supply for powering a portable electrical device, such as a radiotelephone. The capacitive power supply is comprised of capacitors stacked vertically in a series connection of capacitive values capable of generating currents of levels great enough to power a radiotelephone for an extended period of time.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: June 9, 1992
    Assignee: Motorola, Inc.
    Inventors: Michael P. Metroka, Rolland R. Hackbart