Growing community of inventors

Hachioji, Japan

Masao Yokoyama

Average Co-Inventor Count = 2.00

ph-index = 2

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 = 26

Masao YokoyamaShizuo Ishii (2 patents)Masao YokoyamaMasao Yokoyama (2 patents)Shizuo IshiiShizuo Ishii (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Konica Corporation (2 from 3,106 patents)


2 patents:

1. 5146251 - Camera with electronic flash unit

2. 5028943 - Camera with electronic flash unit

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as of
12/13/2025
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