Growing community of inventors

Yokohama, Japan

Masaaki Hiroya

Average Co-Inventor Count = 3.41

ph-index = 9

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 = 624

Masaaki HiroyaShigeyuki Itoh (5 patents)Masaaki HiroyaHiroshi Asao (4 patents)Masaaki HiroyaNaomi Sato (3 patents)Masaaki HiroyaMakoto Ijichi (3 patents)Masaaki HiroyaAtsushi Ito (2 patents)Masaaki HiroyaKenji Matsumoto (2 patents)Masaaki HiroyaAkira Kanehira (2 patents)Masaaki HiroyaKhotaro Yamashita (2 patents)Masaaki HiroyaMisuzu Nakano (2 patents)Masaaki HiroyaKoichi Sano (1 patent)Masaaki HiroyaAkira Muramatsu (1 patent)Masaaki HiroyaHiroyuki Takagi (1 patent)Masaaki HiroyaKunihiro Nomura (1 patent)Masaaki HiroyaAkihiro Kawaoka (1 patent)Masaaki HiroyaTakeshi Teramura (1 patent)Masaaki HiroyaMasayuki Saito (1 patent)Masaaki HiroyaYoshiaki Kawatsura (1 patent)Masaaki HiroyaKeiichi Yamada (1 patent)Masaaki HiroyaMasaaki Hiroya (12 patents)Shigeyuki ItohShigeyuki Itoh (65 patents)Hiroshi AsaoHiroshi Asao (11 patents)Naomi SatoNaomi Sato (16 patents)Makoto IjichiMakoto Ijichi (4 patents)Atsushi ItoAtsushi Ito (138 patents)Kenji MatsumotoKenji Matsumoto (37 patents)Akira KanehiraAkira Kanehira (6 patents)Khotaro YamashitaKhotaro Yamashita (4 patents)Misuzu NakanoMisuzu Nakano (3 patents)Koichi SanoKoichi Sano (65 patents)Akira MuramatsuAkira Muramatsu (18 patents)Hiroyuki TakagiHiroyuki Takagi (16 patents)Kunihiro NomuraKunihiro Nomura (15 patents)Akihiro KawaokaAkihiro Kawaoka (7 patents)Takeshi TeramuraTakeshi Teramura (3 patents)Masayuki SaitoMasayuki Saito (2 patents)Yoshiaki KawatsuraYoshiaki Kawatsura (1 patent)Keiichi YamadaKeiichi Yamada (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (12 from 42,485 patents)

2. Hitachi Keiyo Engineering Co., Ltd. (1 from 34 patents)


12 patents:

1. 6679423 - Electronic-money rewarding system for lost and found IC card

2. 6321213 - Electronic money processing method having a transaction fee collecting function and an electronic money storage apparatus for the same

3. 6273334 - Electronic-money rewarding system for lost and found IC card

4. 6230971 - Transaction-oriented electronic accommodation system

5. 6116506 - Transaction-oriented electronic accommodation system

6. 6039250 - Electronic money sending system

7. 5932859 - Electronic-money rewarding system for lost and found IC card

8. 5754654 - Electronic ticket vending system and method thereof

9. 5751957 - Communication service system employing translation rules for

10. 5481664 - Method of controlling information in multimedia system

11. 5276617 - Transaction processing system and method

12. 5214269 - Method for performing transaction

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12/7/2025
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