DJ

Donovan M. Janssen

ST Storage Technology: 14 patents #25 of 682Top 4%
IBM: 14 patents #8,004 of 70,183Top 15%
Overall (All Time): #140,107 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 25 most recent of 28 patents

Patent #TitleCo-InventorsDate
6891695 Compact tape drive for reading and writing data on single reel magnetic tape cartridges Joseph P. Falace, Wayne R. Hemzacek, David T. Hoge, Clark Janssen, Donald W. Selg +1 more 2005-05-10
6786445 Method for packing tape on a spool without tape edge wear Christian A. Todd, Phillip M. Morgan, Daniel W. Underkofler 2004-09-07
6441990 Compact tape drive having delayed in time first, second and third rotated tape guides for reading and writing data on single reel magnetic tape cartridges Joseph P. Falace, Wayne R. Hemzacek, David T. Hoge, Clark Janssen, Donald W. Selg +1 more 2002-08-27
6246549 Method and apparatus for reducing the coupling of the reaction force from the head actuator into the track follow servo loop of a media drive Christian A. Todd, Lester M. Yeakley, Frank A. Goodknight 2001-06-12
5816519 Automatic tape guide arm with three dimensional range of motion and method of operating the same Lynn C. Jacobs, Joe K. Jurneke, Matthew P. Wojciechowski 1998-10-06
5734540 Tape reel and cartridge having protective flange rings Lynn C. Jacobs 1998-03-31
5657937 Tape reel lock mechanism for coaxial reel tape cartridge Christian A. Todd 1997-08-19
5618005 Coaxial reel tape cartridge with reduced tape forces Christian A. Todd, Lynn C. Jacobs, James Wolf 1997-04-08
5572393 Compliant guide assembly for a magnetic tape transport Wayne E. Church, Willis A. Straight 1996-11-05
5547142 Tape cassette with internal tape cleaning and locking Samuel D. Cheatham, Lynn C. Jacobs, Michael L. Leonhardt, Charles A. Milligan, Christian A. Todd 1996-08-20
5519554 Rack and pinion linear slide read/write head positioning device Christian A. Todd, Lynn C. Jacobs, Matthew P. Wojciechowski 1996-05-21
5504983 Fixture for calibrating a compliant guide assembly for a magnetic tape transport Wayne E. Church, Willis A. Straight 1996-04-09
5430922 Method for calibrating a compliant guide assembly for a magnetic tape transport Wayne E. Church 1995-07-11
5325255 Self identifying universal data storage element William C. Dodt, David T. Hoge, John C. Owens 1994-06-28
4707753 Disk drive head access mechanism William J. Friehauf, Alan J. Kirton, Michael E. Nard, Leroy Rose 1987-11-17
4636892 Flexible disk drive optimized for automated manufacture William J. Friehauf, Alan J. Kirton, Robert M. Murphy, Leroy Rose 1987-01-13
4628385 Two stage colleting in a flexible disk drive Alan J. Kirton, Robert M. Murphy, Leroy Rose 1986-12-09
4626943 Torsional actuator for loading and unloading flexible disk drive Alan J. Kirton, Robert M. Murphy, Leroy Rose 1986-12-02
4511242 Electronic alignment for a paper processing machine William H. Ashbee, Ronald J. Martin, William S. Seaward 1985-04-16
4457506 Servo-controlled automatic document feeder William H. Ashbee, Mark A. Beran, Donald F. Colglazier, John Paul Mantey, Ronald J. Martin +3 more 1984-07-03
4455018 Document feeder electronic registration gate Donald F. Colglazier, John Paul Mantey, James A. Valent 1984-06-19
4438917 Dual motor aligner John Paul Mantey, Donald C. Roller, Lance A. Walker 1984-03-27
4424963 Finisher--exit pocket module for copier Michael A. Bartholet, James Cochran, Robert Magno, Allan J. Rood, William S. Seaward +1 more 1984-01-10
4398709 Wave generation amplification apparatus for cut sheet paper feeding Robert Magno, William S. Seaward 1983-08-16
4395033 Shingling with controlled force and/or velocity Robert Magno, William S. Seaward, James A. Valent 1983-07-26