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Akio Kojima
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Hanyu, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Solder alloy material layer composition, electroconductive and adhe...
Patent number
7,847,406
Issue date
Dec 7, 2010
Ricoh Company, Ltd.
Hitoshi Arita
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electrophotographic photoconductor for liquid development, image fo...
Patent number
7,452,640
Issue date
Nov 18, 2008
Ricoh Company, Ltd.
Masayuki Shoshi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Flat portions of a probe card flattened to have same vertical level...
Patent number
7,394,265
Issue date
Jul 1, 2008
Advantest Corp.
Akio Kojima
G01 - MEASURING TESTING
Information
Patent Grant
Solder alloy material layer composition, electroconductive and adhe...
Patent number
7,059,512
Issue date
Jun 13, 2006
Ricoh Company, Ltd.
Hitoshi Arita
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Virtual horseracing system
Patent number
6,860,806
Issue date
Mar 1, 2005
Teletech Co., Ltd.
Akio Kojima
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Probe card and manufactoring method therefor
Patent number
6,388,456
Issue date
May 14, 2002
Advantest Corporation
Akio Kojima
G01 - MEASURING TESTING
Information
Patent Grant
IC chip tester with heating element for preventing condensation
Patent number
6,313,653
Issue date
Nov 6, 2001
Advantest Corporation
Hiroyuki Takahashi
G01 - MEASURING TESTING
Information
Patent Grant
Image recording method image recording apparatus and image recordin...
Patent number
6,261,349
Issue date
Jul 17, 2001
Ricoh Company, Ltd.
Kiyofumi Nagai
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Aqueous ink compositions and ink-jet printing method using the same
Patent number
6,231,652
Issue date
May 15, 2001
Ricoh Company, Ltd.
Masayuki Koyano
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Set of color ink compositions for ink-jet printing and method of fo...
Patent number
6,120,589
Issue date
Sep 19, 2000
Ricoh Company, Ltd.
Akiko Bannai
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Optically anisotropic recording medium and method of recording and...
Patent number
6,090,508
Issue date
Jul 18, 2000
Ricoh Company, Ltd.
Kyoji Tsutsui
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Image recording method, image recording apparatus and image recordi...
Patent number
5,993,524
Issue date
Nov 30, 1999
Ricoh Company, Ltd.
Kiyofumi Nagai
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Aqueous ink composition and ink-jet printing method using the same
Patent number
5,972,082
Issue date
Oct 26, 1999
Ricoh Company, Ltd.
Masayuki Koyano
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Recording ink composition and recording method using the same
Patent number
5,882,390
Issue date
Mar 16, 1999
Ricoh Company, Ltd.
Kiyofumi Nagai
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Recording ink composition and recording method using the same
Patent number
5,879,439
Issue date
Mar 9, 1999
Ricoh Company, Ltd.
Kiyofumi Nagai
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Cyclopentadiene derivative compounds and electrophotographic photoc...
Patent number
5,750,762
Issue date
May 12, 1998
Ricoh Company, Ltd.
Megumi Kawahara
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
cyclopentadiene derivative compounds and electrophotographic photoc...
Patent number
5,700,614
Issue date
Dec 23, 1997
Ricoh Company, Ltd.
Megumi Kawahara
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Positively-chargeable single-layered type electrophotographic photo...
Patent number
5,492,784
Issue date
Feb 20, 1996
Ricoh Company, Ltd.
Masao Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,486,438
Issue date
Jan 23, 1996
Ricoh Company, Ltd.
Masayuki Shoshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,387,487
Issue date
Feb 7, 1995
Ricoh Company, Ltd.
Masayuki Shoshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,350,653
Issue date
Sep 27, 1994
Ricoh Company, Ltd.
Masayuki Shoshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
High dielectric polymeric optical recording medium
Patent number
5,326,678
Issue date
Jul 5, 1994
Ricoh Company Ltd.
Akio Kojima
G11 - INFORMATION STORAGE
Information
Patent Grant
Safety device for an IC handler and method for its operation
Patent number
5,177,469
Issue date
Jan 5, 1993
Advantest Corporation
Noriyuki Igarashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Photoelectric conversion element
Patent number
4,992,109
Issue date
Feb 12, 1991
Ricoh Company, Ltd.
Masao Yoshikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
N,N'-diphenylbenzidine polymer and method of producing the same
Patent number
4,874,481
Issue date
Oct 17, 1989
Ricoh Company, Ltd.
Tetsuro Suzuki
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photoelectric transducer element
Patent number
4,672,149
Issue date
Jun 9, 1987
Ricoh Co., Ltd.
Masao Yoshikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Layered organic electrophotographic photoconductor element comprisi...
Patent number
4,400,455
Issue date
Aug 23, 1983
Ricoh Company Ltd.
Mitsuru Hashimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Silane coupling agent in protective layer of photoconductive element
Patent number
4,148,637
Issue date
Apr 10, 1979
Ricoh Co., Ltd.
Tomio Kubota
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Probe card and method for manufacturing probe card
Publication number
20080010824
Publication date
Jan 17, 2008
Advantest Corporation
Akio Kojima
G01 - MEASURING TESTING
Information
Patent Application
Electrophotographic photoconductor for liquid development, image fo...
Publication number
20060024597
Publication date
Feb 2, 2006
Masayuki Shoshi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Solder alloy material layer composition, electroconductive and adhe...
Publication number
20060011703
Publication date
Jan 19, 2006
Hitoshi Arita
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Probe card and method for manufacturing probe card
Publication number
20050225336
Publication date
Oct 13, 2005
Akio Kojima
G01 - MEASURING TESTING
Information
Patent Application
Solder alloy material layer composition, electroconductive and adhe...
Publication number
20040129344
Publication date
Jul 8, 2004
Hitoshi Arita
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Image processing method of sporting events
Publication number
20040070691
Publication date
Apr 15, 2004
Akio Kojima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
IC chip tester with heating element for preventing condensation
Publication number
20030122566
Publication date
Jul 3, 2003
Advantest Corporation
Hiroyuki Takahashi
G01 - MEASURING TESTING
Information
Patent Application
Virtual horseracing system
Publication number
20030078087
Publication date
Apr 24, 2003
Akio Kojima
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Application
IC chip tester with heating element for preventing condensation
Publication number
20020011863
Publication date
Jan 31, 2002
Advantest Corporation
Hiroyuki Takahashi
G01 - MEASURING TESTING