Growing community of inventors

Tokyo, Japan

Kazunari Kawashima

Average Co-Inventor Count = 2.42

ph-index = 15

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 = 1,309

Kazunari KawashimaTakatoshi Takemoto (40 patents)Kazunari KawashimaShigeru Handa (9 patents)Kazunari KawashimaMoriyuki Aoyama (4 patents)Kazunari KawashimaHideyuki Kadomatsu (3 patents)Kazunari KawashimaTakaharu Nakamura (2 patents)Kazunari KawashimaTaizo Higaki (2 patents)Kazunari KawashimaEiji Ito (1 patent)Kazunari KawashimaMasayuki Tsurumi (1 patent)Kazunari KawashimaMeiji Muramatsu (1 patent)Kazunari KawashimaTakeharu Nakamura (1 patent)Kazunari KawashimaNobuyuki Muto (1 patent)Kazunari KawashimaKatsuhiro Naito (1 patent)Kazunari KawashimaMasayoshi Yoshikawa (1 patent)Kazunari KawashimaKazunari Kawashima (40 patents)Takatoshi TakemotoTakatoshi Takemoto (97 patents)Shigeru HandaShigeru Handa (10 patents)Moriyuki AoyamaMoriyuki Aoyama (5 patents)Hideyuki KadomatsuHideyuki Kadomatsu (10 patents)Takaharu NakamuraTakaharu Nakamura (29 patents)Taizo HigakiTaizo Higaki (2 patents)Eiji ItoEiji Ito (8 patents)Masayuki TsurumiMasayuki Tsurumi (7 patents)Meiji MuramatsuMeiji Muramatsu (5 patents)Takeharu NakamuraTakeharu Nakamura (1 patent)Nobuyuki MutoNobuyuki Muto (1 patent)Katsuhiro NaitoKatsuhiro Naito (1 patent)Masayoshi YoshikawaMasayoshi Yoshikawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Ace Denken (39 from 99 patents)

2. Ace Denken Kabushiki Kaisha (1 from 1 patent)


40 patents:

1. 6398648 - Game hall system utilizing storage media with adjustment means for stakes

2. 6004208 - Slot machine that can superimpose on a display screen images from

3. 5826680 - Bill handling system in a gaming house

4. 5769416 - Metallic body detecting apparatus

5. 5741184 - Game hall system utilizing storage media

6. 5715924 - Game play media lending machine, for which bank notes can be used

7. 5707237 - Driving simulation system

8. 5700997 - Game play media dispenser

9. 5683082 - Gaming system controlling termination of playing and degree of playing

10. 5655965 - Screen display type slot machine with seemingly flowing condition of

11. 5653636 - Slot machine using game play media and method for setting the number of

12. 5636837 - Pachinko gaming machine

13. 5630585 - Pachinko ball counter and ball dropping apparatus preventing bridge

14. 5627356 - Card for recording the number of game play media, a card dispensing

15. 5613911 - Game apparatus having game media controlling capabilities

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12/10/2025
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