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Yoshio Sakamoto
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Hachiouji-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Speaker unit and speaker
Patent number
12,063,468
Issue date
Aug 13, 2024
Sound Fun Corporation
Kazunori Sato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Diaphragm structure of light sound converter
Patent number
7,418,109
Issue date
Aug 26, 2008
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Diaphragm structure of light-sound converter
Patent number
7,221,875
Issue date
May 22, 2007
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Displacement/quantity of light converter
Patent number
7,045,768
Issue date
May 16, 2006
Kabushiki Kaisha Kenwood
Toru Shinzou
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Plasma treatment method and apparatus
Patent number
6,544,380
Issue date
Apr 8, 2003
Tokyo Electron Limited
Masayuki Tomoyasu
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Plasma treatment method and apparatus
Patent number
6,431,115
Issue date
Aug 13, 2002
Tokyo Electron Limited
Mitsuaki Komino
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Molding method and apparatus using film as molding material
Patent number
6,368,546
Issue date
Apr 9, 2002
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of fabricating a loudspeaker suspension device
Patent number
6,332,262
Issue date
Dec 25, 2001
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Plasma treatment method and apparatus
Patent number
6,264,788
Issue date
Jul 24, 2001
Tokyo Electron Limited
Masayuki Tomoyasu
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Plasma treatment method utilizing an amplitude-modulated high frequ...
Patent number
6,106,737
Issue date
Aug 22, 2000
Tokyo Electron Limited
Masayuki Tomoyasu
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Wide-band antenna and tuning method
Patent number
5,990,841
Issue date
Nov 23, 1999
Yaesu Musen Co., Ltd.
Yoshio Sakamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Molding method and apparatus using film as molding
Patent number
5,879,724
Issue date
Mar 9, 1999
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Speaker component, speaker, and its manufacturing method
Patent number
5,850,462
Issue date
Dec 15, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-point drive type speaker
Patent number
5,841,880
Issue date
Nov 24, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of hot-press molding polyparaphenyleneterephthalamide film
Patent number
5,837,176
Issue date
Nov 17, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Speaker system and its support legs
Patent number
5,818,950
Issue date
Oct 6, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Terminal for speaker
Patent number
5,757,945
Issue date
May 26, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Speaker mount structure of vehicle
Patent number
5,734,131
Issue date
Mar 31, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Voice coil and loudspeaker structure
Patent number
5,717,775
Issue date
Feb 10, 1998
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of manufacturing a repulsion magnetic circuit type loudspeaker
Patent number
5,701,657
Issue date
Dec 30, 1997
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker structure with a diffuser
Patent number
5,701,357
Issue date
Dec 23, 1997
Kabushiki Kaisha Kenwood
Shinta Matsuo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multipoint driving loudspeaker having repulsion magnetic-type drivi...
Patent number
5,682,436
Issue date
Oct 28, 1997
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker structure
Patent number
5,668,886
Issue date
Sep 16, 1997
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker
Patent number
5,594,805
Issue date
Jan 14, 1997
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker structure and method of assembling loudspeaker
Patent number
5,590,210
Issue date
Dec 31, 1996
Kabushiki Kaisha Kenwood
Shinta Matsuo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker assembly
Patent number
5,550,332
Issue date
Aug 27, 1996
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker
Patent number
5,452,366
Issue date
Sep 19, 1995
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Film molding apparatus
Patent number
5,399,081
Issue date
Mar 21, 1995
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of molding an acoustic diaphragm part of para aromatic polya...
Patent number
5,283,027
Issue date
Feb 1, 1994
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Film molding method
Patent number
5,273,705
Issue date
Dec 28, 1993
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
SPEAKER UNIT AND SPEAKER
Publication number
20220295173
Publication date
Sep 15, 2022
SOUND FUN CORPORATION
Kazunori Sato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SPEAKER
Publication number
20200053467
Publication date
Feb 13, 2020
SOUND FUN CORPORATION
Kazunori SATO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Screen Speaker System
Publication number
20090097692
Publication date
Apr 16, 2009
Kabushiki Kaisha Kenwood
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Diaphragm structure of light sound converter
Publication number
20040238267
Publication date
Dec 2, 2004
Yoshio Sakamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Displacement/quantity of light converter
Publication number
20040090686
Publication date
May 13, 2004
Toru Shinzou
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Diaphragm structure of light-sound converter
Publication number
20040062406
Publication date
Apr 1, 2004
Yoshio Sakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Plasma treatment method and apparatus
Publication number
20020088547
Publication date
Jul 11, 2002
TOKYO ELECTRON LIMITED
Masayuki Tomoyasu
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Plasma treatment method and apparatus
Publication number
20010027843
Publication date
Oct 11, 2001
TOKYO ELECTRON LIMITED
Mitsuaki Komino
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...