Growing community of inventors

Tokyo, Japan

Masayuki Tsurumi

Average Co-Inventor Count = 2.19

ph-index = 7

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 = 447

Masayuki TsurumiTakatoshi Takemoto (7 patents)Masayuki TsurumiKazunari Kawashima (1 patent)Masayuki TsurumiEiji Ito (1 patent)Masayuki TsurumiKatsuhiro Naito (1 patent)Masayuki TsurumiMasayuki Tsurumi (7 patents)Takatoshi TakemotoTakatoshi Takemoto (97 patents)Kazunari KawashimaKazunari Kawashima (40 patents)Eiji ItoEiji Ito (8 patents)Katsuhiro NaitoKatsuhiro Naito (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Ace Denken (7 from 99 patents)


7 patents:

1. 5984780 - Image display gaming system and gaming house management system

2. 5941774 - Image display gaming system and gaming house management system

3. 5810665 - Image display gaming machine and image display control method

4. 5807177 - Gaming machine chair

5. 5702303 - Game machine having a playing display screen

6. 5516104 - Slot machine and game media dispensing apparatus

7. 5472195 - Display system at a game machine island

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as of
12/9/2025
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