Growing community of inventors

Osaka, Japan

Hitoshi Tachikawa

Average Co-Inventor Count = 1.33

ph-index = 1

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 = 3

Hitoshi TachikawaHideaki Funakoshi (1 patent)Hitoshi TachikawaHitoshi Tachikawa (2 patents)Hideaki FunakoshiHideaki Funakoshi (14 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Funai Electric Company Ltd. (2 from 2,413 patents)


2 patents:

1. 8704957 - Unit for returning erroneous operation that instructs display device to display operation history when panic key is pressed

2. 6928044 - Apparatus for fixing half mirror of optical pickup

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as of
1/14/2026
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