Growing community of inventors

Fujisawa, Japan

Osamu Sudo

Average Co-Inventor Count = 1.00

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 = 12

Osamu SudoOsamu Sudo (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Nippon Oil Seal Industry Co., Ltd. (2 from 25 patents)


2 patents:

1. 3977125 - Device for sealing steel doors of coke oven

2. 3952454 - Device for sealing doors of coke oven

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1/12/2026
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