Douglas W. Johnson

Person

Stillwater, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Methods and systems for magnetic media servo writing
- Patent number 8,947,802
- Issue date Feb 3, 2015
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Tapered pole heads for magnetic media
- Patent number 8,867,167
- Issue date Oct 21, 2014
- Imation Corp.
- Stephen J. Rothermel
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular pole head for servo writing magnetic media
- Patent number 8,867,157
- Issue date Oct 21, 2014
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Erasure of magnetic storage media having perpendicular anisotropy
- Patent number 8,817,415
- Issue date Aug 26, 2014
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Grant
Continuous biasing and servowriting of magnetic storage media havin...
- Patent number 8,804,276
- Issue date Aug 12, 2014
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo mark length matched to write head gap for magnetic storage media
- Patent number 8,797,674
- Issue date Aug 5, 2014
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Grant
Erasure and servowriting of magnetic storage media having perpendic...
- Patent number 8,767,342
- Issue date Jul 1, 2014
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Grant
Systems and methods for processing magnetic media with first and se...
- Patent number 8,760,802
- Issue date Jun 24, 2014
- Imation Corp.
- Stephen J. Rothermel
- G11 - INFORMATION STORAGE
Information Patent Grant
Methods and systems for magnetic media servo writing
- Patent number 8,643,968
- Issue date Feb 4, 2014
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Distributed servo patterns for data storage media
- Patent number 7,889,454
- Issue date Feb 15, 2011
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage tape recertification
- Patent number 7,835,108
- Issue date Nov 16, 2010
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Robust data storage techniques for two-sided data storage tape
- Patent number 7,595,950
- Issue date Sep 29, 2009
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Grant
Interleaved servo pattern
- Patent number 7,495,859
- Issue date Feb 24, 2009
- Imation Corp.
- Mark P. Weber
- G11 - INFORMATION STORAGE
Information Patent Grant
Distributed servo patterns for data storage media
- Patent number 7,466,510
- Issue date Dec 16, 2008
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Concurrent servo and data track writing
- Patent number 7,436,622
- Issue date Oct 14, 2008
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Mixed frequency amplitude-based servo pattern
- Patent number 7,379,254
- Issue date May 27, 2008
- Imation Corp.
- Denis J. Langlois
- G11 - INFORMATION STORAGE
Information Patent Grant
System with matrix array of write heads and matrix array of magneto...
- Patent number 7,342,748
- Issue date Mar 11, 2008
- Imation Corp.
- Yung Yip
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage tape guiding systems using tapered guides
- Patent number 7,204,446
- Issue date Apr 17, 2007
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Guide arrangements for data storage tape guiding systems
- Patent number 7,204,445
- Issue date Apr 17, 2007
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Accessing both sides of data storage tape
- Patent number 7,173,794
- Issue date Feb 6, 2007
- Imation Corp.
- Richard W. Molstad
- G11 - INFORMATION STORAGE
Information Patent Grant
Band identification in time-based servopositioning formats
- Patent number 7,139,151
- Issue date Nov 21, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual mode servo pattern
- Patent number 7,095,583
- Issue date Aug 22, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Time-based sectored servo data format
- Patent number 7,079,343
- Issue date Jul 18, 2006
- Imation Corp.
- Richard W. Molstad
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape guiding techniques for a dual actuator read-while-write record...
- Patent number 7,054,097
- Issue date May 30, 2006
- Imation Corp.
- Yung Yip
- G11 - INFORMATION STORAGE
Information Patent Grant
Systems and methods for using noise measurement tracks with servopo...
- Patent number 7,031,097
- Issue date Apr 18, 2006
- Imation Corp.
- Richard W. Molstad
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic tape head assembly with laterally moveable central section
- Patent number 7,006,329
- Issue date Feb 28, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Two-sided data storage tape with servo information on both sides of...
- Patent number 6,999,269
- Issue date Feb 14, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
System and methods for using servopositioning signals
- Patent number 6,950,269
- Issue date Sep 27, 2005
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Controlling winding tension to reduce tape pack stress
- Patent number 6,918,553
- Issue date Jul 19, 2005
- Imation Corp.
- Christopher J. Zwettler
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage tape cartridge with subambient pressure feature
- Patent number 6,874,720
- Issue date Apr 5, 2005
- Imation Corp.
- Christopher J. Zwettler
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
METHODS AND SYSTEMS FOR MAGNETIC MEDIA SERVO WRITING
- Publication number 20140146412
- Publication date May 29, 2014
- IMATION CORP.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
INFORMATION STORAGE USING SERVO PATTERNS
- Publication number 20140139944
- Publication date May 22, 2014
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
TAPERED POLE HEADS FOR MAGNETIC MEDIA
- Publication number 20130286504
- Publication date Oct 31, 2013
- IMATION CORP.
- Stephen J. Rothermel
- G11 - INFORMATION STORAGE
Information Patent Application
SYSTEMS AND METHODS FOR PROCESSING MAGNETIC MEDIA
- Publication number 20130286510
- Publication date Oct 31, 2013
- IMATION CORP.
- Stephen J. Rothermel
- G11 - INFORMATION STORAGE
Information Patent Application
METHODS AND SYSTEMS FOR MAGNETIC MEDIA SERVO WRITING
- Publication number 20130286501
- Publication date Oct 31, 2013
- IMATION CORP.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular Pole Head for Servo Writing Magnetic Media
- Publication number 20130265672
- Publication date Oct 10, 2013
- IMATION CORP.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Erasure and Servowriting of Magnetic Storage Media having Perpendic...
- Publication number 20120314322
- Publication date Dec 13, 2012
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Application
Continuous Biasing and Servowriting of Magnetic Storage Media havin...
- Publication number 20120314318
- Publication date Dec 13, 2012
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Application
Erasure of Magnetic Storage Media having Perpendicular Anisotropy
- Publication number 20120314320
- Publication date Dec 13, 2012
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Application
Servo Mark Length Matched to Write Head Gap for Magnetic Storage Media
- Publication number 20120314319
- Publication date Dec 13, 2012
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Application
Data storage tape guiding system
- Publication number 20090122446
- Publication date May 14, 2009
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Distributed servo patterns for data storage media
- Publication number 20090073604
- Publication date Mar 19, 2009
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Data storage tape recertification
- Publication number 20090002859
- Publication date Jan 1, 2009
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
High friction rotating guide and magnetic tape system
- Publication number 20080278846
- Publication date Nov 13, 2008
- Imation Corp.
- James S. Anderson
- G11 - INFORMATION STORAGE
Information Patent Application
Interleaved servo pattern
- Publication number 20080198500
- Publication date Aug 21, 2008
- Imation Corp.
- Mark P. Weber
- G11 - INFORMATION STORAGE
Information Patent Application
Concurrent servo and data track writing
- Publication number 20080024905
- Publication date Jan 31, 2008
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Robust data storage techniques for two-sided data storage tape
- Publication number 20070223126
- Publication date Sep 27, 2007
- Imation Corp.
- Larold L. Olson
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium with dual magnetic sides and having a low...
- Publication number 20070212576
- Publication date Sep 13, 2007
- Imation Corp.
- Adam A. Brodd
- G11 - INFORMATION STORAGE
Information Patent Application
Mixed frequency amplitude-based servo pattern
- Publication number 20070002487
- Publication date Jan 4, 2007
- Denis J. Langlois
- G11 - INFORMATION STORAGE
Information Patent Application
Distributed servo patterns for data storage media
- Publication number 20060274446
- Publication date Dec 7, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Dual mode servo pattern
- Publication number 20060126207
- Publication date Jun 15, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Guide arrangements for data storage tape guiding systems
- Publication number 20060027693
- Publication date Feb 9, 2006
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Data storage tape guiding systems using tapered guides
- Publication number 20060027694
- Publication date Feb 9, 2006
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Tape Guide decreasing transverse movement of data storage tape at h...
- Publication number 20050207062
- Publication date Sep 22, 2005
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
System with matrix array of write heads and matrix array of magneto...
- Publication number 20050152067
- Publication date Jul 14, 2005
- Yung Yip
- G11 - INFORMATION STORAGE
Information Patent Application
Time-based sectored servo data format
- Publication number 20050073763
- Publication date Apr 7, 2005
- Richard W. Molstad
- G11 - INFORMATION STORAGE
Information Patent Application
Accessing both sides of data storage tape
- Publication number 20050057858
- Publication date Mar 17, 2005
- Imation Corp.
- Richard W. Molstad
- G11 - INFORMATION STORAGE
Information Patent Application
Two-sided data storage tape with servo information on both sides of...
- Publication number 20050057845
- Publication date Mar 17, 2005
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic tape head assembly with laterally moveable central section
- Publication number 20040240113
- Publication date Dec 2, 2004
- Imation Corp.
- Douglas W. Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE TAPE CARTRIDGE WITH SUBAMBIENT PRESSURE FEATURE
- Publication number 20040238668
- Publication date Dec 2, 2004
- Imation Corp.
- Christopher J. Zwettler
- G11 - INFORMATION STORAGE

Douglas W. Johnson

Person

Patents Grantslast 30 patents

Methods and systems for magnetic media servo writing

Tapered pole heads for magnetic media

Perpendicular pole head for servo writing magnetic media

Erasure of magnetic storage media having perpendicular anisotropy

Continuous biasing and servowriting of magnetic storage media havin...

Servo mark length matched to write head gap for magnetic storage media

Erasure and servowriting of magnetic storage media having perpendic...

Systems and methods for processing magnetic media with first and se...

Methods and systems for magnetic media servo writing

Distributed servo patterns for data storage media

Data storage tape recertification

Robust data storage techniques for two-sided data storage tape

Interleaved servo pattern

Distributed servo patterns for data storage media

Concurrent servo and data track writing

Mixed frequency amplitude-based servo pattern

System with matrix array of write heads and matrix array of magneto...

Data storage tape guiding systems using tapered guides

Guide arrangements for data storage tape guiding systems

Accessing both sides of data storage tape

Band identification in time-based servopositioning formats

Dual mode servo pattern

Time-based sectored servo data format

Tape guiding techniques for a dual actuator read-while-write record...

Systems and methods for using noise measurement tracks with servopo...

Magnetic tape head assembly with laterally moveable central section

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

System and methods for using servopositioning signals

Controlling winding tension to reduce tape pack stress

Data storage tape cartridge with subambient pressure feature

Patents Applicationslast 30 patents

METHODS AND SYSTEMS FOR MAGNETIC MEDIA SERVO WRITING

INFORMATION STORAGE USING SERVO PATTERNS

TAPERED POLE HEADS FOR MAGNETIC MEDIA

SYSTEMS AND METHODS FOR PROCESSING MAGNETIC MEDIA

METHODS AND SYSTEMS FOR MAGNETIC MEDIA SERVO WRITING

Perpendicular Pole Head for Servo Writing Magnetic Media

Erasure and Servowriting of Magnetic Storage Media having Perpendic...

Continuous Biasing and Servowriting of Magnetic Storage Media havin...

Erasure of Magnetic Storage Media having Perpendicular Anisotropy

Servo Mark Length Matched to Write Head Gap for Magnetic Storage Media

Data storage tape guiding system

Distributed servo patterns for data storage media

Data storage tape recertification

High friction rotating guide and magnetic tape system

Interleaved servo pattern

Concurrent servo and data track writing

Robust data storage techniques for two-sided data storage tape

Magnetic recording medium with dual magnetic sides and having a low...

Mixed frequency amplitude-based servo pattern

Distributed servo patterns for data storage media

Dual mode servo pattern

Guide arrangements for data storage tape guiding systems

Data storage tape guiding systems using tapered guides

Tape Guide decreasing transverse movement of data storage tape at h...

System with matrix array of write heads and matrix array of magneto...

Time-based sectored servo data format

Accessing both sides of data storage tape

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

Magnetic tape head assembly with laterally moveable central section

DATA STORAGE TAPE CARTRIDGE WITH SUBAMBIENT PRESSURE FEATURE