Growing community of inventors

Tokyo, Japan

Toshihisa Akaba

Average Co-Inventor Count = 3.84

ph-index = 3

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 = 111

Toshihisa AkabaYukihiro Izumitani (3 patents)Toshihisa AkabaIsao Iizuka (3 patents)Toshihisa AkabaShigeru Watanabe (2 patents)Toshihisa AkabaMasami Nakamoto (1 patent)Toshihisa AkabaHakaru Fujita (1 patent)Toshihisa AkabaKazumichi Kurihara (1 patent)Toshihisa AkabaYouichi Ishiguro (1 patent)Toshihisa AkabaToshihisa Akaba (4 patents)Yukihiro IzumitaniYukihiro Izumitani (6 patents)Isao IizukaIsao Iizuka (4 patents)Shigeru WatanabeShigeru Watanabe (107 patents)Masami NakamotoMasami Nakamoto (7 patents)Hakaru FujitaHakaru Fujita (4 patents)Kazumichi KuriharaKazumichi Kurihara (1 patent)Youichi IshiguroYouichi Ishiguro (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hoya Corporation (3 from 2,528 patents)

2. Other (1 from 832,718 patents)


4 patents:

1. 6736506 - Eyeglasses made-to-order system

2. 6638573 - Spectacles frame surface treatment method

3. 6533418 - System for making spectacles to order

4. 6340226 - Spectacles accommodating interchangeable/replaceable lens

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as of
12/10/2025
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