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Irwin Magnetic Systems, Inc.
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Ann Arbor, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for servo-positioning movable transducer heads
Patent number
5,055,951
Issue date
Oct 8, 1991
Irwin Magnetic Systems, Inc.
Michael I. Behr
G11 - INFORMATION STORAGE
Information
Patent Grant
Lead screw and follower-type head positioner for data recorders
Patent number
5,050,025
Issue date
Sep 17, 1991
Irwin Magnetic Systems, Inc.
Michael E. Carlson
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for removing data stream variations
Patent number
5,003,408
Issue date
Mar 26, 1991
Irwin Magnetic Systems, Inc.
Richard A. Farkas
G11 - INFORMATION STORAGE
Information
Patent Grant
Head-positioner arm for data recorders
Patent number
5,001,584
Issue date
Mar 19, 1991
Irwin Magnetic Systems, Inc.
Thomas J. Angellotti
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic transducer head structure with reduced leakage between cor...
Patent number
4,954,921
Issue date
Sep 4, 1990
Irwin Magnetic Systems, Inc.
Michael L. Bolt
G11 - INFORMATION STORAGE
Information
Patent Grant
Drive for end loading and transversely shifting tape cartridge
Patent number
RE33224
Issue date
May 29, 1990
Irwin Magnetic Systems, Inc.
Wolfgang Speigelstein
360 - Dynamic magnetic information storage or retrieval
Information
Patent Grant
Transducer head core structure with recessed magnetic closures
Patent number
4,849,841
Issue date
Jul 18, 1989
Irwin Magnetic Systems, Inc.
Edmund L. Sokolik
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic transducer head structure
Patent number
4,819,107
Issue date
Apr 4, 1989
Irwin Magnetic Systems, Inc.
Michael L. Bolt
G11 - INFORMATION STORAGE
Information
Patent Grant
Cartridge tape drive
Patent number
4,807,067
Issue date
Feb 21, 1989
Irwin Magnetic Systems, Inc.
Wolfgang Spiegelstein
G11 - INFORMATION STORAGE
Information
Patent Grant
System and method for encoding and storing digital information on m...
Patent number
4,796,110
Issue date
Jan 3, 1989
Irwin Magnetic Systems, Inc.
Edward N. Glass
G11 - INFORMATION STORAGE
Information
Patent Grant
Miniaturized cartridge-type tape drive for data processors
Patent number
4,647,994
Issue date
Mar 3, 1987
Irwin Magnetic Systems, Inc.
Samuel N. Irwin
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for positioning transducers by digital convers...
Patent number
4,646,175
Issue date
Feb 24, 1987
Irwin Magnetic Systems, Inc.
Edmund L. Sokolik
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for pre-recording tracking information on magn...
Patent number
4,586,094
Issue date
Apr 29, 1986
Irwin Magnetic Systems, Inc.
John M. Chambors
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for normalizing servo-positioning signals
Patent number
4,498,129
Issue date
Feb 5, 1985
Irwin Magnetic Systems, Inc.
Juan F. Velazquez
G11 - INFORMATION STORAGE
Information
Patent Grant
Data record with pre-recorded transducer positioning signals, and s...
Patent number
4,472,750
Issue date
Sep 18, 1984
Irwin Magnetic Systems, Inc.
Marlin K. Klumpp
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74121164 - EC/TAPE
Serial number
74121164
Registration number
1664834
Filing date
Dec 6, 1990
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74119551 - SX SERIES
Serial number
74119551
Registration number
1745570
Filing date
Nov 30, 1990
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74085854 - EZARC
Serial number
74085854
Registration number
1665701
Filing date
Aug 7, 1990
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
74076339 - SUPPORT PLUS
Serial number
74076339
Registration number
1694997
Filing date
Jul 9, 1990
IRWIN MAGNETIC SYSTEMS, INC.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73817293 - UNIVERSAL TAPE FORMAT
Serial number
73817293
Registration number
1663969
Filing date
Aug 7, 1989
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73773514 - EZ
Serial number
73773514
Registration number
1591759
Filing date
Jan 9, 1989
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73722328 - ACCUTRAK
Serial number
73722328
Registration number
1574453
Filing date
Apr 14, 1988
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73722327 - ACCUTRAK
Serial number
73722327
Registration number
1574452
Filing date
Apr 14, 1988
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73627511 - EZTAPE
Serial number
73627511
Registration number
1471248
Filing date
Oct 29, 1986
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73591855 - EC/TAPE
Serial number
73591855
Registration number
1457031
Filing date
Apr 7, 1986
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73589198 - IRWIN
Serial number
73589198
Registration number
1410326
Filing date
Mar 21, 1986
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73530752 - IRWIN MAGNETICS
Serial number
73530752
Registration number
1366480
Filing date
Apr 5, 1985
IRWIN MAGNETIC SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments