Growing community of inventors

Minowa, Japan

Kazuhisa Hatanaka

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 = 1

Kazuhisa HatanakaMatsutaro Naito (4 patents)Kazuhisa HatanakaYoshitaka Fujihara (4 patents)Kazuhisa HatanakaKazuhisa Hatanaka (4 patents)Matsutaro NaitoMatsutaro Naito (22 patents)Yoshitaka FujiharaYoshitaka Fujihara (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seiko Epson Corporation (4 from 33,464 patents)


4 patents:

1. 11495727 - Resonator element, resonator, electronic device, electronic apparatus, mobile body and method of manufacturing resonator element

2. 10680158 - Resonator element, resonator, electronic device, electronic apparatus, mobile body and method of manufacturing resonator element

3. 10147867 - Resonator element, resonator, electronic device, electronic apparatus, mobile body and method of manufacturing resonator element

4. 9450166 - Resonator element, resonator, electronic device, electronic apparatus, mobile body and method of manufacturing resonator element

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as of
1/6/2026
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