Inventor · disambiguated record
Douglas W. Johnson
Also filed as: JOHNSON DOUGLAS A · JOHNSON DOUGLAS G · JOHNSON DOUGLAS W · JOHNSON DOUGLAS WAYNE
66 granted patents·8 pending applications·3,147 citations·filing 1982–2014
99Inventor score
Top patents by PatentIndex Score
74 records- 0199US6447864B2Sheet material having weakness zones and a system for dispensing the materialFORT JAMES CORP·Filed 2000·Granted Sep 10, 2002·1.3k cites·69 claims
- 0298US6950269B1System and methods for using servopositioning signalsIMATION CORP·Filed 2002·Granted Sep 27, 2005·126 cites·34 claims
- 0398US6536624B2Sheet material having weakness zones and a system for dispensing the materialFORT JAMES CORP·Filed 2002·Granted Mar 25, 2003·79 cites·4 claims
- 0497US6781778B1Time-based sectored servo data formatIMATION CORP·Filed 2001·Granted Aug 24, 2004·93 cites·17 claims
- 0597US6228454B1Sheet material having weakness zones and a system for dispensing the materialFORT JAMES CORP·Filed 1998·Granted May 8, 2001·97 cites·206 claims
- 0696US6842305B2Time-based servo for magnetic storage mediaIMATION CORP·Filed 2003·Granted Jan 11, 2005·78 cites·18 claims
- 0796US6542325B1Time-based servo for magnetic storage mediaIMATION CORP·Filed 1999·Granted Apr 1, 2003·121 cites·32 claims
- 0895US7889454B2Distributed servo patterns for data storage mediaIMATION CORP·Filed 2008·Granted Feb 15, 2011·35 cites·10 claims
- 0995US6464120B1Sheet material having weakness zones and a system for dispensing the materialFORT JAMES CORP·Filed 2000·Granted Oct 15, 2002·50 cites·53 claims
- 1095US5432652AServo and data format for magnetic tape having plural spaced-apart servo areas interleaved with data track areas having serpentine track scanning using any one of a plurality of number of concurrently accessed tracksIBM·Filed 1993·Granted Jul 11, 1995·112 cites·18 claims
- 1194US7095583B2Dual mode servo patternIMATION CORP·Filed 2004·Granted Aug 22, 2006·41 cites·24 claims
- 1294US6685074B2Sheet material dispensing apparatus and methodFORT JAMES CORP·Filed 2002·Granted Feb 3, 2004·57 cites·36 claims
- 1393US6202956B1Dispenser for dispensing toilet tissue from rollsFORT JAMES CORP·Filed 1999·Granted Mar 20, 2001·94 cites·22 claims
- 1492US7054097B1Tape guiding techniques for a dual actuator read-while-write recording systemIMATION CORP·Filed 2005·Granted May 30, 2006·15 cites·19 claims
- 1592US7006329B2Magnetic tape head assembly with laterally moveable central sectionIMATION CORP·Filed 2003·Granted Feb 28, 2006·37 cites·20 claims
- 1692US6412678B2Sheet material dispensing apparatus and methodFORT JAMES CORP·Filed 2001·Granted Jul 2, 2002·42 cites·18 claims
- 1792US6321963B1Sheet material dispensing apparatus and methodFORT JAMES CORP·Filed 1998·Granted Nov 27, 2001·70 cites·136 claims
- 1892USD417109SSheet material dispenserFORT JAMES CORP·Filed 1998·Granted Nov 30, 1999·45 cites·1 claims
- 1991US7466510B2Distributed servo patterns for data storage mediaIMATION CORP·Filed 2005·Granted Dec 16, 2008·14 cites·10 claims
- 2091US7436622B2Concurrent servo and data track writingIMATION CORP·Filed 2006·Granted Oct 14, 2008·12 cites·22 claims
- 2190US5813624AApparatus for dispensing toilet tissue from rollsFORT JAMES CORP·Filed 1996·Granted Sep 29, 1998·77 cites·7 claims
- 2289US7139151B2Band identification in time-based servopositioning formatsIMATION CORP·Filed 2003·Granted Nov 21, 2006·25 cites·17 claims
- 2388US6405957B1Data storage tape cartridge and tape path with an idler wrap guide for reduced lateral tape movementIMATION CORP·Filed 2000·Granted Jun 18, 2002·31 cites·37 claims
- 2486US7495859B2Interleaved servo patternIMATION CORP·Filed 2007·Granted Feb 24, 2009·8 cites·19 claims
- 2585US7878745B2U-nut fastener and collated strip thereofILLINOIS TOOL WORKS·Filed 2009·Granted Feb 1, 2011·28 cites·15 claims
- 2684US5636090ATilt limiting inertial actuator latch for a data storage systemIBM·Filed 1994·Granted Jun 3, 1997·35 cites·19 claims
- 2783US7835108B2Data storage tape recertificationIMATION CORP·Filed 2007·Granted Nov 16, 2010·5 cites·20 claims
- 2881US6527913B1Creping blade, system, and method for creping a cellulosic webFORT JAMES CORP·Filed 2000·Granted Mar 4, 2003·15 cites·33 claims
- 2980US7379254B2Mixed frequency amplitude-based servo patternIMATION CORP·Filed 2005·Granted May 27, 2008·4 cites·16 claims
- 3079US8760802B2Systems and methods for processing magnetic media with first and second magnetic gaps adjacent opposite sides of the recording layerIMATION CORP·Filed 2013·Granted Jun 24, 2014·4 cites·19 claims
- 3177US7342748B2System with matrix array of write heads and matrix array of magnetoresistive (MR) read headsIMATION CORP·Filed 2004·Granted Mar 11, 2008·11 cites·13 claims
- 3277US5297755ATape cartridge tape pathIBM·Filed 1992·Granted Mar 29, 1994·29 cites·18 claims
- 3376US5552946ACompliant rail for shock protection of a PCMCIA DASDIBM·Filed 1994·Granted Sep 3, 1996·27 cites·16 claims
- 3473US7595950B2Robust data storage techniques for two-sided data storage tapeIMATION CORP·Filed 2006·Granted Sep 29, 2009·2 cites·10 claims
- 3573US6918553B2Controlling winding tension to reduce tape pack stressIMATION CORP·Filed 2003·Granted Jul 19, 2005·8 cites·18 claims
- 3673US5284308ATape path having implicit squeeze bearingIBM·Filed 1992·Granted Feb 8, 1994·22 cites·15 claims
- 3772US7079343B2Time-based sectored servo data formatIMATION CORP·Filed 2004·Granted Jul 18, 2006·7 cites·8 claims
- 3872US5550690AResilient compliant clamp for data storage disk drivesIBM·Filed 1995·Granted Aug 27, 1996·21 cites·10 claims
- 3972US4580825ASafety rescue grappleJOHNSON DOUGLAS W·Filed 1984·Granted Apr 8, 1986·24 cites·31 claims
- 4071US5222779AChaise loungeJOHNSON DOUGLAS W·Filed 1992·Granted Jun 29, 1993·33 cites·9 claims
- 4169US6437935B1Method and apparatus for a real and positional optimization of a storage disk data zoneIBM·Filed 1994·Granted Aug 20, 2002·18 cites·21 claims
- 4268US6999269B2Two-sided data storage tape with servo information on both sides of the tapeIMATION CORP·Filed 2003·Granted Feb 14, 2006·6 cites·29 claims
- 4368US5486961AResilient compliant clamp for data storage disk drivesIBM·Filed 1994·Granted Jan 23, 1996·15 cites·6 claims
- 4467US10133831B2Method and system of predicting future hydrocarbon productionLANDMARK GRAPHICS CORP·Filed 2013·Granted Nov 20, 2018·4 cites·22 claims
- 4566US8804276B2Continuous biasing and servowriting of magnetic storage media having perpendicular anisotropyOLSON LAROLD L·Filed 2011·Granted Aug 12, 2014·2 cites·17 claims
- 4665US7173794B2Accessing both sides of data storage tapeIMATION CORP·Filed 2003·Granted Feb 6, 2007·5 cites·17 claims
- 4765US5687487AFlatness testerDOGWOOD RESTORATIONS·Filed 1995·Granted Nov 18, 1997·31 cites·32 claims
- 4865US5207364AShoulder protection device for ladder transportJOHNSON DOUGLAS W·Filed 1992·Granted May 4, 1993·25 cites·17 claims
- 4961US8817415B2Erasure of magnetic storage media having perpendicular anisotropyOLSON LAROLD L·Filed 2011·Granted Aug 26, 2014·1 cites·17 claims
- 5061US8797674B2Servo mark length matched to write head gap for magnetic storage mediaOLSON LAROLD L·Filed 2011·Granted Aug 5, 2014·1 cites·18 claims
Showing the top 50 of 74 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →