P

Inventor

JOHNSON DOUGLAS W

US65 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON DOUGLAS W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IMATION CORP

22 patents
US6950269B1Sep 27, 2005

System and methods for using servopositioning signals

IMATION CORP126 citations99
US6542325B1Apr 1, 2003

Time-based servo for magnetic storage media

IMATION CORP121 citations99
US6842305B2Jan 11, 2005

Time-based servo for magnetic storage media

IMATION CORP78 citations98
US6781778B1Aug 24, 2004

Time-based sectored servo data format

IMATION CORP93 citations97
US7139151B2Nov 21, 2006

Band identification in time-based servopositioning formats

IMATION CORP25 citations92
US7095583B2Aug 22, 2006

Dual mode servo pattern

IMATION CORP41 citations92
US7889454B2Feb 15, 2011

Distributed servo patterns for data storage media

IMATION CORP35 citations91
US7006329B2Feb 28, 2006

Magnetic tape head assembly with laterally moveable central section

IMATION CORP37 citations91
US6405957B1Jun 18, 2002

Data storage tape cartridge and tape path with an idler wrap guide for reduced lateral tape movement

IMATION CORP31 citations90
US7436622B2Oct 14, 2008

Concurrent servo and data track writing

IMATION CORP12 citations84
US7342748B2Mar 11, 2008

System with matrix array of write heads and matrix array of magnetoresistive (MR) read heads

IMATION CORP11 citations84
US7054097B1May 30, 2006

Tape guiding techniques for a dual actuator read-while-write recording system

IMATION CORP15 citations84
US7495859B2Feb 24, 2009

Interleaved servo pattern

IMATION CORP8 citations83
US7466510B2Dec 16, 2008

Distributed servo patterns for data storage media

IMATION CORP14 citations83
US6999269B2Feb 14, 2006

Two-sided data storage tape with servo information on both sides of the tape

IMATION CORP6 citations74
US6918553B2Jul 19, 2005

Controlling winding tension to reduce tape pack stress

IMATION CORP8 citations74
US6078481AJun 20, 2000

Tape storage cartridge having two-level tape path

IMATION CORP14 citations74
US8760802B2Jun 24, 2014

Systems and methods for processing magnetic media with first and second magnetic gaps adjacent opposite sides of the recording layer

IMATION CORP4 citations73
US7079343B2Jul 18, 2006

Time-based sectored servo data format

IMATION CORP7 citations73
US6270030B1Aug 7, 2001

System for controlling compatibility of tape cartridges having the same form factor

IMATION CORP12 citations71
US7835108B2Nov 16, 2010

Data storage tape recertification

IMATION CORP5 citations63
US7379254B2May 27, 2008

Mixed frequency amplitude-based servo pattern

IMATION CORP4 citations63

FORT JAMES CORP

11 patents

IBM

9 patents

JOHNSON DOUGLAS W

4 patents

DOGWOOD RESTORATIONS

1 patent

ILLINOIS TOOL WORKS

1 patent

LILLY CO ELI

1 patent

LANDMARK GRAPHICS CORP

1 patent

Showing the top 50 of 65 patents by PatentIndex Score.