Patent Assignment
Reel/Frame 005281/0484
Security Interest
Recorded: 1990-04-26
Pages: 6
Assignor
IRWIN MAGNETIC SYSTEMS, INC.
Executed: 1990-04-24
Assignee
Covered Properties
(21)
Combined Disc and Tape Drive
Patent:
270,055 →
Application:
06/184,788 →
Integrated Disc and Tape Recorder Drive Unit
Patent:
270,348 →
Application:
06/185,252 →
Method and Apparatus for Normalizing Servo-Positioning Signals
Patent:
4,498,129 →
Application:
06/280,127 →
Method for Controlling a Disc Head
Patent:
4,462,053 →
Application:
06/280,137 →
Data Record with Pre-Recorded Transducer Positioning Signals, and System for Utilizing Same
Patent:
4,472,750 →
Application:
06/280,138 →
Positioner Apparatus for Tape Recorder Heads
Patent:
4,468,712 →
Application:
06/280,139 →
Method and Apparatus for Pre-Recording Tracking Information on Magnetic Media
Patent:
4,586,094 →
Application:
06/589,007 →
Miniaturized Cartridge-Type Tape Drive for Data Processors
Patent:
4,647,994 →
Application:
06/589,146 →
Method and Apparatus for Positioning Transducers by Digital Conversion of Analog-Type Signals
Patent:
4,646,175 →
Application:
06/597,012 →
Cartridge Tape Drive with Friction Roller to Open Cartridge Door
Patent:
4,673,995 →
Application:
06/628,110 →
Electric Motor Housing
Patent:
291,797 →
Application:
06/683,301 →
System and Method for Encoding and Storing Digital Information on Magnetic Tape
Patent:
4,796,110 →
Application:
06/830,559 →
Magnetic Transducer Head Structure
Patent:
4,819,107 →
Application:
06/915,734 →
Cartridge Tape Drive
Patent:
4,807,067 →
Application:
07/009,448 →
Transducer Head Core Structure with Recessed Magnetic Closures
Patent:
4,849,841 →
Application:
07/036,915 →
Method and Apparatus for Removing Data Stream Variations
Patent:
5,003,408 →
Application:
07/228,318 →
Magnetic Transducer Head Structure with Reduced Leakage Between Core Circuits
Patent:
4,954,921 →
Application:
07/241,090 →
Head-Positioner Arm for Data Recorders
Patent:
5,001,584 →
Application:
07/314,376 →
Lead Screw and Follower-Type Head Positioner for Data Recorders
Patent:
5,050,025 →
Application:
07/314,454 →
Method and Apparatus for Servo-Positioning Movable Transducer Heads
Patent:
5,055,951 →
Application:
07/321,915 →
System and Method for Storing and Retrieving Files for Archival Purposes
Application:
07/377,729 →
Related Assignments
(25)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Sep 8, 1980
From: IRWIN SAMUEL N.; BUTSCH OTTO R.; LUM FRANCIS; VELAZQUEZ JUAN F.
To: IRWIN INTERNATIONAL, OF WHICH IRWIN INTERNATIONAL INDUSTRIES, INC.
Reel/Frame 003800/0413 →
Assignment of Assignors Interest.
Sep 8, 1980
From: IRWIN SAMUEL N.; BUTSCH OTTO R.; LUM FRANCIS; VELAZQUEZ JUAN F.
To: IRWIN INTERNATIONAL
Reel/Frame 003800/0222 →
Assignment of Assignors Interest.
Mar 23, 1981
From: IRWIN INTERNATIONAL, BY IRWIN INTERNATIONAL INDUSTRIES, INC., A GENERAL PARTNER
To: IRWIN INTERNATIONAL, INC.
Reel/Frame 003842/0689 →
Assignment of Assignors Interest.
Jul 2, 1981
From: VELAZQUEZ, JUAN F.
To: IRWIN INTERNATIONAL, INC., A CORP. OF MI
Reel/Frame 003911/0582 →
Assignment of Assignors Interest.
Mar 13, 1984
From: IRWIN, SAMUEL N.; LUM, FRANCIS; BOLT, MICHAEL L.; HENKE, STEVEN E.
To: IRWIN MAGNETIC SYSTEMS, INC. A CORP OF MI
Reel/Frame 004240/0123 →
Assignment of Assignors Interest.
Mar 13, 1984
From: CHAMBORS, JOHN M.; LUM, FRANCIS
To: IRWIN MAGNETIC SYSTEMS INC A MI CORP
Reel/Frame 004240/0494 →
Assignment of Assignors Interest.
Apr 5, 1984
From: SOKOLIK, EDMUND L.; LUM, FRANCIS
To: IRWIN MAGNETIC SYSTEMS, INC., A CORP. OF MI
Reel/Frame 004246/0903 →
Assignment of Assignors Interest.
Apr 12, 1984
From: MUELLER, JOSEPH H.; DAWSON, RONALD G.; IRWIN, SAMUEL N.
To: IRWIN INTERNATIONAL, INC., A MI CORP.
Reel/Frame 004305/0224 →
Assignment of Assignors Interest.
May 4, 1984
From: LUM, FRANCIS; GRAHAM, BRUCE; IRWIN, SAMUEL N.; VELAZQUEZ, JUAN F.
To: SAMUEL N IRWIN 3 REGENT CT ANN ARBOR MI 48104; JUAN F VELAZQUEZ 8520 ROUNDHILL CT SALINE MI 48176
Reel/Frame 004252/0701 →
Assignment of Assignors Interest.
Jun 14, 1984
From: IRWIN INTERNATIONAL INC
To: IRWIN MAGNETIC SYSTEMS, INC., 2311 GREEN ROAD ANN ARBOR MICHIGAN 48105A CORP OF MICHIGAN
Reel/Frame 004272/0166 →
Assignment of Assignors Interest.
Jun 14, 1984
From: KLUMPP, MARLIN K.; MUELLER, JOSEPH H.; LUM, FRANCIS; IRWIN, SAMUEL N.
To: IRWIN INTERNATIONAL, INC. 2000 GREEN ROAD ANN ARBOR, MI 48105 A CORP OF
Reel/Frame 004272/0168 →
Assignment of Assignors Interest.
Jul 6, 1984
From: SPIEGELSTEIN, WOLFGANG
To: KENNEDY COMPANY
Reel/Frame 004283/0015 →
Assignment of Assignors Interest.
Aug 27, 1984
From: IRWIN INTERNATIONAL, INC., A CORP. OF MI
To: IRWIN MAGNETIC SYSTEMS, INC., A CORP. OF MI
Reel/Frame 004294/0012 →
Assignment of Assignors Interest.
Dec 18, 1984
From: SPIEGELSTEIN, WOLFGANG
To: KENNEDY COMPANY
Reel/Frame 004356/0645 →
Assignment of Assignors Interest.
Feb 18, 1986
From: GLASS, EDWARD N.; STARK, WAYNE
To: IRWIN MAGNETIC SYSTEMS, INC., A CORP. OF MICIGAN
Reel/Frame 004519/0174 →
Released by Secured Party Reel 4779 Frame 0591
Jun 6, 1988
From: CITIBANK, N.A.
To: SHUGART CORPORATION
Reel/Frame 004904/0649 →
Assignment of Assignors Interest.
Jun 6, 1988
From: KENNEDY COMPANY
To: SHUGART CORPORATION, A CA CORP.
Reel/Frame 004904/0646 →
Assignment of Assignors Interest.
Jun 6, 1988
From: SHUGART COMPANY
To: IRWIN MAGNETIC SYSTEM, INC., A DE CORP.
Reel/Frame 004904/0643 →
Security Interest
Aug 8, 1988
From: SHUGART CORPORATION, A CA CORP.
To: UNION BANK
Reel/Frame 004927/0811 →
Released by Secured Party
Aug 8, 1988
From: CITIBANK, N.A.
To: SHUGART CORPORATION
Reel/Frame 005175/0014 →
Released by Secured Party
Aug 8, 1988
From: CITYBANK, N.A.
To: SHUGART CORPORATION, A CA CORP.
Reel/Frame 005036/0010 →
Assignment of Assignors Interest.
Feb 22, 1989
From: CARLSON, MICHAEL E.
To: IRWIN MAGNETIC SYSTEMS, INC.
Reel/Frame 005047/0534 →
Assignment of Assignors Interest.
Mar 10, 1989
From: BEHR, MICHEAL I.
To: IRWIN MAGNETIC SYSTEMS, INC.,
Reel/Frame 005053/0604 →
Assignment of Assignors Interest.
Mar 27, 1989
From: ANGELLOTTI, THOMAS J.
To: IRWIN MAGNETIC SYSTEMS, INC., 2101 COMMONWEALTH BOULEVARD, ANN ARBOR, MI 48105-1561, A CORP. OF DELAWARE
Reel/Frame 005057/0662 →
Assignment of Assignors Interest.
Aug 17, 1989
From: MIDGDEY, CHRISTOPHER W.; HUNSCHE, RICHARD S.; WEAVER, MARK L.
To: IRWIN MAGNETIC SYSTEMS, INC.
Reel/Frame 005121/0941 →