Air-sandwiched disks

Industry

CPC
G11B7/24015

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Parent Industries

GPHYSICS G11Information storage G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER G11B7/00Recording or reproducing by optical means

Current Industry

G11B7/24015Air-sandwiched disks

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Optical discs with cover sheets and pressure equalization of the en...
- Patent number 5,872,768
- Issue date Feb 16, 1999
- Eastman Kodak Company
- Boris A. Shtipelman
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical discs with cover sheets and dynamic pressure stabilization...
- Patent number 5,774,447
- Issue date Jun 30, 1998
- Eastman Kodak Company
- Boris A. Shtipelman
- G11 - INFORMATION STORAGE
Information Patent Grant
Air sandwiched optical discs with closable pressure relief holes
- Patent number 5,774,448
- Issue date Jun 30, 1998
- Eastman Kodak Company
- Boris A. Shtipelman
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk data storage system with multiple write-once dye-based...
- Patent number 5,627,817
- Issue date May 6, 1997
- International Business Machines Corporation
- Hal J. Rosen
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium and adhesive composition therefor
- Patent number 5,290,877
- Issue date Mar 1, 1994
- Mitsui Petrochemical Industries, Ltd.
- Hideo Yamaoka
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium
- Patent number 5,213,947
- Issue date May 25, 1993
- Ricoh Company, Ltd.
- Yutaka Ueda
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium and adhesive composition therefor
- Patent number 5,188,875
- Issue date Feb 23, 1993
- Mitsui Petrochemical Industries, Ltd.
- Hideo Yamaoka
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium
- Patent number 5,151,310
- Issue date Sep 29, 1992
- Pioneer Electronic Corporation
- Shuichi Yanagisawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium with concentric spacers and cut-away a...
- Patent number 5,132,960
- Issue date Jul 21, 1992
- Ricoh Company, Ltd.
- Tetsuo Hosokawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording disk
- Patent number 5,036,510
- Issue date Jul 30, 1991
- Pioneer Electronic Corporation
- Ryutaro Hayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Information storage medium and process for producing the same
- Patent number 5,013,593
- Issue date May 7, 1991
- Fuji Photo Film Co., Ltd.
- Hideki Matsuzawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium including a spacing member having port...
- Patent number 4,969,143
- Issue date Nov 6, 1990
- Kabushiki Kaisha Toshiba
- Noboru Ogino
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium
- Patent number 4,956,213
- Issue date Sep 11, 1990
- Fuji Photo Film Co., Ltd.
- Toshiyuki Masuda
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Resin composition for spacers of information recording disc
- Patent number 4,943,611
- Issue date Jul 24, 1990
- Mitsui Petrochemical Industries, Ltd.
- Akira Todo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical information recording medium
- Patent number 4,915,997
- Issue date Apr 10, 1990
- Ricoh Company, Ltd.
- Tetsu Yamamuro
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical disc
- Patent number 4,911,968
- Issue date Mar 27, 1990
- Hitachi Maxell, Ltd.
- Tosio Higasihara
- G11 - INFORMATION STORAGE
Information Patent Grant
Optically readable disc with a centering member fixed to a transpar...
- Patent number 4,899,329
- Issue date Feb 6, 1990
- U.S. Philips Corporation
- Franciscus T. Sleegers
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk and process for producing the same
- Patent number 4,853,260
- Issue date Aug 1, 1989
- Pioneer Electronic Corporation
- Yukio Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording disk
- Patent number 4,847,827
- Issue date Jul 11, 1989
- Pioneer Electric Corporation
- Ryutaro Hayashi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing information recording discs
- Patent number 4,834,819
- Issue date May 30, 1989
- Mitsui Petrochemical Industries, Ltd.
- Akira Todo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical information record disk
- Patent number 4,812,857
- Issue date Mar 14, 1989
- Pioneer Electronic Corporation
- Yasushi Murata
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk type information recording medium
- Patent number 4,791,044
- Issue date Dec 13, 1988
- Pioneer Electronic Corporation
- Toshikazu Yoshino
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual surface optical memory disc
- Patent number 4,740,947
- Issue date Apr 26, 1988
- Sharp Kabushiki Kaisha
- Kenji Ohta
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical recording disk
- Patent number 4,739,345
- Issue date Apr 19, 1988
- TDK Corporation
- Kenryo Namba
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Information recording medium
- Patent number 4,731,620
- Issue date Mar 15, 1988
- Fuji Photo Film Co., Ltd.
- Masao Yabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording element
- Patent number 4,731,780
- Issue date Mar 15, 1988
- U.S. Philips Corporation
- Petrus J. Kivits
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk assembly
- Patent number 4,726,008
- Issue date Feb 16, 1988
- Eastman Kodak Company
- John E. Renaud
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Ventilation arrangement for use in an optical recording disc
- Patent number 4,720,826
- Issue date Jan 19, 1988
- Hitachi Maxell, Ltd.
- Toshinori Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording disc
- Patent number 4,710,913
- Issue date Dec 1, 1987
- Hitachi Maxell, Ltd.
- Seiichi Matsushima
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium
- Patent number 4,686,543
- Issue date Aug 11, 1987
- Fuji Photo Film Co., Ltd.
- Yoshio Tani
- G11 - INFORMATION STORAGE

Air-sandwiched disks

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Optical discs with cover sheets and pressure equalization of the en...

Optical discs with cover sheets and dynamic pressure stabilization...

Air sandwiched optical discs with closable pressure relief holes

Optical disk data storage system with multiple write-once dye-based...

Information recording medium and adhesive composition therefor

Optical recording medium

Information recording medium and adhesive composition therefor

Information recording medium

Information recording medium with concentric spacers and cut-away a...

Optical recording disk

Information storage medium and process for producing the same

Information recording medium including a spacing member having port...

Information recording medium

Resin composition for spacers of information recording disc

Optical information recording medium

Optical disc

Optically readable disc with a centering member fixed to a transpar...

Optical disk and process for producing the same

Optical information recording disk

Process for producing information recording discs

Optical information record disk

Disk type information recording medium

Dual surface optical memory disc

Optical recording disk

Information recording medium

Optical recording element

Optical disk assembly

Ventilation arrangement for use in an optical recording disc

Optical recording disc

Information recording medium

Patents Applicationslast 30 patents