Growing community of inventors

Tokyo, Japan

Rena Nagai

Average Co-Inventor Count = 4.00

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 = 4

Rena NagaiKazuhiko Katoh (2 patents)Rena NagaiNobuhisa Nozaka (2 patents)Rena NagaiKazuya Isogai (2 patents)Rena NagaiRena Nagai (2 patents)Kazuhiko KatohKazuhiko Katoh (3 patents)Nobuhisa NozakaNobuhisa Nozaka (2 patents)Kazuya IsogaiKazuya Isogai (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (2 from 28,605 patents)


2 patents:

1. 8164780 - Appropriate printer selection simulation system, ink consumption amount simulation device, and cost server

2. 8009312 - Appropriate printer selection simulation system, ink consumption amount simulation device, and cost server

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as of
1/21/2026
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