Growing community of inventors

Osaka, Japan

Masahiko Kawahara

Average Co-Inventor Count = 1.43

ph-index = 6

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 131

Masahiko KawaharaSeiji Mori (2 patents)Masahiko KawaharaTeruho Yamada (2 patents)Masahiko KawaharaToshikazu Iwasaki (2 patents)Masahiko KawaharaYukio Sugimoto (2 patents)Masahiko KawaharaSadao Miyoshi (1 patent)Masahiko KawaharaMike Ableson (0 patent)Masahiko KawaharaMasahiko Kawahara (7 patents)Seiji MoriSeiji Mori (9 patents)Teruho YamadaTeruho Yamada (6 patents)Toshikazu IwasakiToshikazu Iwasaki (3 patents)Yukio SugimotoYukio Sugimoto (2 patents)Sadao MiyoshiSadao Miyoshi (3 patents)Mike AblesonMike Ableson (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Morito Co., Ltd. (6 from 34 patents)

2. Mitsubishi Denki Kabushiki Kaisha (2 from 21,351 patents)

3. Foster Electric Company, Limited (1 from 64 patents)

4. Fuji Cone Seisakusho Co., Ltd. (1 from 2 patents)


7 patents:

1. 7386145 - Loudspeaker system, method and apparatus of manufacturing the same

2. 6899794 - Speaker device, and method and device for producing the same

3. 6481064 - Plastic fasteners

4. 6401308 - Tape-mounted snap fastener having engagement and disengagement directionality

5. 6353978 - Snap fastner having a detachment directionality

6. 6314621 - Tape-mounted fastener and a manufacturing method thereof

7. D417388 - Cord lock

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idiyas.com
as of
12/10/2025
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