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Akihiko Okamoto
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Information processing apparatus, and program, computer readable me...
Patent number
7,359,578
Issue date
Apr 15, 2008
Ricoh Company, Ltd.
Akihiko Okamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
CNT film and field-emission cold cathode comprising the same
Patent number
7,161,285
Issue date
Jan 9, 2007
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of fabricating nano-tube, method of manufacturing field-emis...
Patent number
6,780,075
Issue date
Aug 24, 2004
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field emission type cold cathode element, method of fabricating the...
Patent number
6,404,113
Issue date
Jun 11, 2002
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Cold cathode display device and driving method
Patent number
6,404,138
Issue date
Jun 11, 2002
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field emission cold cathode device and manufacturing method thereof
Patent number
6,307,309
Issue date
Oct 23, 2001
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field emission cold cathode device and method for driving the same
Patent number
6,153,978
Issue date
Nov 28, 2000
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field emission cold cathode element
Patent number
6,060,823
Issue date
May 9, 2000
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of driving a field emission cold cathode device and a field...
Patent number
6,040,973
Issue date
Mar 21, 2000
NEC Corporaiton
Akihiko Okamoto
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Field emission electron gun capable of minimizing nonuniform influe...
Patent number
5,977,696
Issue date
Nov 2, 1999
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electron beam apparatus having an electron lens and a structure for...
Patent number
5,877,594
Issue date
Mar 2, 1999
NEC Corporation
Soichiro Miyano
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electron gun with a gamma correct field emission cathode
Patent number
5,850,120
Issue date
Dec 15, 1998
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field emission electron gun capable of minimizing nonuniform influe...
Patent number
5,786,657
Issue date
Jul 28, 1998
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Field emission cathode including cylindrically shaped resistive con...
Patent number
5,557,160
Issue date
Sep 17, 1996
NEC Corporation
Hideo Makishima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Moelcular beam epitaxy for selective epitaxial growth of III - V co...
Patent number
4,948,751
Issue date
Aug 14, 1990
NEC Corporation
Akihiko Okamoto
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Information processing apparatus, and program, computer readable me...
Publication number
20050030382
Publication date
Feb 10, 2005
Akihiko Okamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Cnt film and field-emission cold cathode comprising the same
Publication number
20040104660
Publication date
Jun 3, 2004
Akihiko Okamoto
B82 - NANO-TECHNOLOGY
Information
Patent Application
Pattern forming method for carbon nanotube, and field emission cold...
Publication number
20040043219
Publication date
Mar 4, 2004
Fuminori Ito
B82 - NANO-TECHNOLOGY
Information
Patent Application
Method of fabricating nano-tube, method of manufacturing field-emis...
Publication number
20010006869
Publication date
Jul 5, 2001
Akihiko Okamoto
B82 - NANO-TECHNOLOGY