Tsuneo Suganuma

Person

Tokorozawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium and magnetic recording apparatus
- Patent number 5,587,235
- Issue date Dec 24, 1996
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording and reproducing method, magneto-optical m...
- Patent number 5,270,987
- Issue date Dec 14, 1993
- Hitachi, Ltd.
- Toshimitsu Kaku
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for magnetic orientation of magnetic recording medium using...
- Patent number 5,034,243
- Issue date Jul 23, 1991
- Hitachi, Ltd.
- Katsuyoshi Chiba
- G11 - INFORMATION STORAGE
Information Patent Grant
Polarization plane maintaining optical fiber fabricating method
- Patent number 4,828,592
- Issue date May 9, 1989
- Hitachi, Ltd.
- Hiroyoshi Matsumura
- G02 - OPTICS
Information Patent Grant
Magnetic recording medium
- Patent number 4,786,553
- Issue date Nov 22, 1988
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Temperature-compensated magnetic field measuring instrument
- Patent number 4,604,577
- Issue date Aug 5, 1986
- Hitachi, Ltd.
- Hiroyoshi Matsumura
- G02 - OPTICS
Information Patent Grant
Optical magnetic-field measuring apparatus having improved temperat...
- Patent number 4,581,579
- Issue date Apr 8, 1986
- Hitachi, Ltd.
- Kazuyuki Nagatsuma
- G01 - MEASURING TESTING
Information Patent Grant
Optical D.C. electric-field measuring apparatus with optic sensing...
- Patent number 4,570,064
- Issue date Feb 11, 1986
- Hitachi, Ltd.
- Kazuyuki Nagatsuma
- G01 - MEASURING TESTING
Information Patent Grant
Method of producing optical fiber preform
- Patent number 4,505,729
- Issue date Mar 19, 1985
- Hitachi, Ltd.
- Hiroyoshi Matsumura
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical gyroscope with large propagation constant difference
- Patent number 4,483,617
- Issue date Nov 20, 1984
- Hitachi, Ltd.
- Hiroyoshi Matsumura
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber and method of producing the same
- Patent number 4,426,129
- Issue date Jan 17, 1984
- Hitachi, Ltd.
- Hiroyoshi Matsumura
- G02 - OPTICS
Information Patent Grant
Process for producing optical glass
- Patent number 4,426,216
- Issue date Jan 17, 1984
- Hitachi, Ltd.
- Shin Satoh
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Single-mode-transmission optical fiber and a method of manufacturin...
- Patent number 4,406,518
- Issue date Sep 27, 1983
- Hitachi, Ltd.
- Hiroyoshi Matsumura
- G02 - OPTICS
Information Patent Grant
Lithium oxide based amorphous material and process for preparation...
- Patent number 4,390,460
- Issue date Jun 28, 1983
- Hitachi, Ltd.
- Katsuki Miyauchi
- G02 - OPTICS
Information Patent Grant
Method for producing optical glass
- Patent number 4,324,576
- Issue date Apr 13, 1982
- Hitachi, Ltd.
- Iwao Matsuyama
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing mother rods for optical fibers
- Patent number 4,323,381
- Issue date Apr 6, 1982
- Hitachi, Ltd.
- Iwao Matsuyama
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for producing silica glass
- Patent number 4,317,668
- Issue date Mar 2, 1982
- Hitachi, Ltd.
- Kenzo Susa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for producing optical fiber preform
- Patent number 4,259,101
- Issue date Mar 31, 1981
- Hitachi, Ltd.
- Yasuo Tsukuda
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber
- Patent number 4,206,967
- Issue date Jun 10, 1980
- Hitachi, Ltd.
- Seiichi Onoda
- G02 - OPTICS
Information Patent Grant
Optical fiber and method for producing the same
- Patent number 4,206,968
- Issue date Jun 10, 1980
- Hitachi, Ltd.
- Tsuneo Suganuma
- G02 - OPTICS
Information Patent Grant
Method of producing optical fiber
- Patent number 4,203,743
- Issue date May 20, 1980
- Hitachi, Ltd.
- Tsuneo Suganuma
- G02 - OPTICS
Information Patent Grant
Optical transmission line
- Patent number 4,185,890
- Issue date Jan 29, 1980
- Hitachi Ltd.
- Seiichi Onoda
- G02 - OPTICS

Tsuneo Suganuma

Person

Patents Grantslast 30 patents

Magnetic recording medium and magnetic recording apparatus

Magneto-optical recording and reproducing method, magneto-optical m...

Method for magnetic orientation of magnetic recording medium using...

Polarization plane maintaining optical fiber fabricating method

Magnetic recording medium

Temperature-compensated magnetic field measuring instrument

Optical magnetic-field measuring apparatus having improved temperat...

Optical D.C. electric-field measuring apparatus with optic sensing...

Method of producing optical fiber preform

Optical gyroscope with large propagation constant difference

Optical fiber and method of producing the same

Process for producing optical glass

Single-mode-transmission optical fiber and a method of manufacturin...

Lithium oxide based amorphous material and process for preparation...

Method for producing optical glass

Method for producing mother rods for optical fibers

Method for producing silica glass

Method for producing optical fiber preform

Optical fiber

Optical fiber and method for producing the same

Method of producing optical fiber

Optical transmission line