Katsumi Ryoke

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Polishing member and process for producing the same
- Patent number 6,443,827
- Issue date Sep 3, 2002
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G02 - OPTICS
Information Patent Grant
Abrasive member for very high return loss optical connector ferrules
- Patent number 6,012,969
- Issue date Jan 11, 2000
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G02 - OPTICS
Information Patent Grant
Abrasive member
- Patent number 5,711,772
- Issue date Jan 27, 1998
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive tape for magnetic information reading apparatus for photog...
- Patent number 5,702,800
- Issue date Dec 30, 1997
- Fuji Photo Film Co., Ltd.
- Keiji Mihayashi
- B24 - GRINDING POLISHING
Information Patent Grant
Cleaning method using abrasive tape
- Patent number 5,695,386
- Issue date Dec 9, 1997
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive member
- Patent number 5,672,185
- Issue date Sep 30, 1997
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive member
- Patent number 5,639,284
- Issue date Jun 17, 1997
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive tape having an interlayer for magnetic head cleaning and p...
- Patent number 5,633,068
- Issue date May 27, 1997
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive tape
- Patent number 5,632,789
- Issue date May 27, 1997
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive tape
- Patent number 5,611,826
- Issue date Mar 18, 1997
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Polishing method
- Patent number 5,573,444
- Issue date Nov 12, 1996
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Magnetic recording medium having a magnetic layer with a specified...
- Patent number 5,512,350
- Issue date Apr 30, 1996
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Abrasive member
- Patent number 5,456,734
- Issue date Oct 10, 1995
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING
Information Patent Grant
Magnetic recording medium having a magnetic layer containing two ca...
- Patent number 5,407,725
- Issue date Apr 18, 1995
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and process for production thereof
- Patent number 5,326,618
- Issue date Jul 5, 1994
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium kubbed with a super hard alloy blade cont...
- Patent number 5,238,753
- Issue date Aug 24, 1993
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium having a magnetic layer containing ferrom...
- Patent number 5,212,019
- Issue date May 18, 1993
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 5,196,265
- Issue date Mar 23, 1993
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 5,094,908
- Issue date Mar 10, 1992
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 5,089,331
- Issue date Feb 18, 1992
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium in which certain physical properties of t...
- Patent number 5,063,105
- Issue date Nov 5, 1991
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 5,008,147
- Issue date Apr 16, 1991
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media
- Patent number 4,988,562
- Issue date Jan 29, 1991
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,886,703
- Issue date Dec 12, 1989
- Fuji Photo Film Co., Ltd.
- Kazuo Hasumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,880,693
- Issue date Nov 14, 1989
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,880,692
- Issue date Nov 14, 1989
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,868,060
- Issue date Sep 19, 1989
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Magnetic recording medium
- Patent number 4,803,121
- Issue date Feb 7, 1989
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,758,468
- Issue date Jul 19, 1988
- Fuji Photo Film Co., Ltd.
- Masatoshi Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media
- Patent number 4,748,090
- Issue date May 31, 1988
- Fuji Photo Film Co., Ltd.
- Nobuyuki Yamamoto
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Manufacturing method of tape-form recording medium
- Publication number 20060289335
- Publication date Dec 28, 2006
- Fuji Photo Film Co., Ltd.
- Yutaka Kakuishi
- G11 - INFORMATION STORAGE
Information Patent Application
Polishing member and method for polishing end faces of optical fibers
- Publication number 20030171078
- Publication date Sep 11, 2003
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- B24 - GRINDING POLISHING

Katsumi Ryoke

Person

Patents Grantslast 30 patents

Polishing member and process for producing the same

Abrasive member for very high return loss optical connector ferrules

Abrasive member

Abrasive tape for magnetic information reading apparatus for photog...

Cleaning method using abrasive tape

Abrasive member

Abrasive member

Abrasive tape having an interlayer for magnetic head cleaning and p...

Abrasive tape

Abrasive tape

Polishing method

Magnetic recording medium having a magnetic layer with a specified...

Abrasive member

Magnetic recording medium having a magnetic layer containing two ca...

Magnetic recording medium and process for production thereof

Magnetic recording medium kubbed with a super hard alloy blade cont...

Magnetic recording medium having a magnetic layer containing ferrom...

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium in which certain physical properties of t...

Magnetic recording medium

Magnetic recording media

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording media

Patents Applicationslast 30 patents

Manufacturing method of tape-form recording medium

Polishing member and method for polishing end faces of optical fibers