Haruki Tokumaru

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Disk laminate, disk cartridge, disk loading/unloading mechanism, di...
- Patent number 8,607,259
- Issue date Dec 10, 2013
- Ricoh Company, Ltd.
- Yoshimichi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk clamping mechanism and disk drive system, with movably support...
- Patent number 8,549,547
- Issue date Oct 1, 2013
- Ricoh Company, Ltd.
- Nobuaki Onagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk rotating device, disk, disk assembly, disk cartridge, and reco...
- Patent number 8,495,669
- Issue date Jul 23, 2013
- Ricoh Company, Ltd.
- Yasutomo Aman
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recording/reproduction method and data recording/reproduction...
- Patent number 8,259,543
- Issue date Sep 4, 2012
- Ricoh Company, Ltd.
- Daiichi Koide
- G11 - INFORMATION STORAGE
Information Patent Grant
Optimum gap determined recording/reproducing apparatus
- Patent number 8,228,772
- Issue date Jul 24, 2012
- Ricoh Company, Ltd.
- Nobuaki Onagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optimum gap determined recording/reproducing apparatus and method
- Patent number 8,077,576
- Issue date Dec 13, 2011
- Ricoh Company, Ltd.
- Nobuaki Onagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical medium recording apparatus with a rotatable optical beam de...
- Patent number 5,471,456
- Issue date Nov 28, 1995
- Asahi Kogaku Kogyo Kabushiki Kaisha
- Haruki Tokumaru
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
RECORDING/REPRODUCING APPARATUS AND RECORDING/REPRODUCING METHOD
- Publication number 20120060174
- Publication date Mar 8, 2012
- Nobuaki Onagi
- G11 - INFORMATION STORAGE
Information Patent Application
DISK LAMINATE, DISK CARTRIDGE, DISK LOADING/UNLOADING MECHANISM, DI...
- Publication number 20110283299
- Publication date Nov 17, 2011
- Yoshimichi Takano
- G11 - INFORMATION STORAGE
Information Patent Application
DISK CLAMPING MECHANISM AND DISK DRIVE SYSTEM
- Publication number 20110072446
- Publication date Mar 24, 2011
- Nobuaki Onagi
- G11 - INFORMATION STORAGE
Information Patent Application
DISK ROTATING DEVICE, DISK, DISK ASSEMBLY, DISK CARTRIDGE, AND RECO...
- Publication number 20100058373
- Publication date Mar 4, 2010
- Yasutomo Aman
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCING APPARATUS AND RECORDING/REPRODUCING METHOD
- Publication number 20090231975
- Publication date Sep 17, 2009
- Nobuaki Onagi
- G11 - INFORMATION STORAGE
Information Patent Application
Data recording/reproduction method and data recording/reproduction...
- Publication number 20090010123
- Publication date Jan 8, 2009
- Daiichi Koide
- G11 - INFORMATION STORAGE

Haruki Tokumaru

Person

Patents Grantslast 30 patents

Disk laminate, disk cartridge, disk loading/unloading mechanism, di...

Disk clamping mechanism and disk drive system, with movably support...

Disk rotating device, disk, disk assembly, disk cartridge, and reco...

Data recording/reproduction method and data recording/reproduction...

Optimum gap determined recording/reproducing apparatus

Optimum gap determined recording/reproducing apparatus and method

Optical medium recording apparatus with a rotatable optical beam de...

Patents Applicationslast 30 patents

RECORDING/REPRODUCING APPARATUS AND RECORDING/REPRODUCING METHOD

DISK LAMINATE, DISK CARTRIDGE, DISK LOADING/UNLOADING MECHANISM, DI...

DISK CLAMPING MECHANISM AND DISK DRIVE SYSTEM

DISK ROTATING DEVICE, DISK, DISK ASSEMBLY, DISK CARTRIDGE, AND RECO...

RECORDING/REPRODUCING APPARATUS AND RECORDING/REPRODUCING METHOD

Data recording/reproduction method and data recording/reproduction...