Growing community of inventors

Tokyo, Japan

Masahiko Happo

Average Co-Inventor Count = 2.48

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 = 147

Masahiko HappoTakashi Kajita (3 patents)Masahiko HappoTadao Nakamura (3 patents)Masahiko HappoTomiaki Shirakawa (3 patents)Masahiko HappoTakaharu Ando (2 patents)Masahiko HappoTomiaki Ishihara (1 patent)Masahiko HappoTakato Yokouchi (1 patent)Masahiko HappoMasahiko Happo (6 patents)Takashi KajitaTakashi Kajita (21 patents)Tadao NakamuraTadao Nakamura (9 patents)Tomiaki ShirakawaTomiaki Shirakawa (7 patents)Takaharu AndoTakaharu Ando (35 patents)Tomiaki IshiharaTomiaki Ishihara (14 patents)Takato YokouchiTakato Yokouchi (11 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Toshiba (6 from 52,722 patents)


6 patents:

1. D370673 - Handheld information communications terminal

2. D363711 - Optical disk cartridge

3. D346596 - Optical disk cartridge

4. D346382 - Portable radio telephone

5. D345157 - Portable radio telephone

6. D344943 - Portable radio telephone

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as of
12/13/2025
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