Growing community of inventors

Shiga, Japan

Nobuharu Oka

Average Co-Inventor Count = 3.00

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 = 6

Nobuharu OkaHajime Murakami (1 patent)Nobuharu OkaSadao Murasawa (1 patent)Nobuharu OkaNobuharu Oka (1 patent)Hajime MurakamiHajime Murakami (13 patents)Sadao MurasawaSadao Murasawa (12 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dainippon Screen Mfg. Co., Ltd. (1 from 1,306 patents)

2. Ishihara Sangyo Kaisha, Ltd. (1 from 393 patents)


1 patent:

1. 4663257 - Method of color electrophotography

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