Growing community of inventors

Ichikawa, Japan

Keiko Ohta

Average Co-Inventor Count = 1.64

ph-index = 12

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 = 640

Keiko OhtaMayumi Seki (6 patents)Keiko OhtaToshiaki Nakajo (4 patents)Keiko OhtaKazuma Kubono (4 patents)Keiko OhtaShinji Yamamoto (1 patent)Keiko OhtaAkiko Ashiwa (1 patent)Keiko OhtaKoji Omaki (1 patent)Keiko OhtaKeiko Ohta (20 patents)Mayumi SekiMayumi Seki (11 patents)Toshiaki NakajoToshiaki Nakajo (22 patents)Kazuma KubonoKazuma Kubono (6 patents)Shinji YamamotoShinji Yamamoto (195 patents)Akiko AshiwaAkiko Ashiwa (23 patents)Koji OmakiKoji Omaki (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Works, Ltd. (18 from 1,623 patents)

2. The Procter Gamble Company (1 from 17,164 patents)

3. Matsushita Electric Works Co., Ltd. (1 from 5 patents)


20 patents:

1. D588743 - Electric depilator

2. D578252 - Electric depilator

3. D577862 - Electric depilator

4. D577813 - Electric facial pore cleaner

5. D577814 - Electric facial pore cleaner

6. D577863 - Electric shaver

7. D571040 - Electric depilator

8. D568473 - Skin care device

9. D558397 - Electric depilator

10. D558399 - Electric shaver

11. D548341 - Handheld electric face cleaner

12. D539979 - Depilator

13. D538430 - Facial treatment appliance

14. D537205 - Electric shaver

15. D533650 - Facial steamer

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idiyas.com
as of
12/8/2025
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