Growing community of inventors

Tokyo, Japan

Mayumi Ueyama

Average Co-Inventor Count = 7.63

ph-index = 4

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 = 95

Mayumi UeyamaShoji Ohno (4 patents)Mayumi UeyamaHiroto Yamauchi (4 patents)Mayumi UeyamaMotoyoshi Sasaki (4 patents)Mayumi UeyamaHisashi Ohta (4 patents)Mayumi UeyamaYoshiyuki Azuma (4 patents)Mayumi UeyamaKatsuhiko Abe (4 patents)Mayumi UeyamaHiroshi Shimizu (1 patent)Mayumi UeyamaNaoki Yamamoto (1 patent)Mayumi UeyamaTadashi Kuwabara (1 patent)Mayumi UeyamaYutaka Igarashi (1 patent)Mayumi UeyamaShinichiro Fukushima (1 patent)Mayumi UeyamaYukinobu Tada (1 patent)Mayumi UeyamaToru Numata (1 patent)Mayumi UeyamaMaki Furui (1 patent)Mayumi UeyamaRituko Kanazawa (1 patent)Mayumi UeyamaKatsuki Ikuta (1 patent)Mayumi UeyamaMisuzu Mochizuki (1 patent)Mayumi UeyamaMayumi Ueyama (5 patents)Shoji OhnoShoji Ohno (10 patents)Hiroto YamauchiHiroto Yamauchi (9 patents)Motoyoshi SasakiMotoyoshi Sasaki (8 patents)Hisashi OhtaHisashi Ohta (6 patents)Yoshiyuki AzumaYoshiyuki Azuma (6 patents)Katsuhiko AbeKatsuhiko Abe (5 patents)Hiroshi ShimizuHiroshi Shimizu (67 patents)Naoki YamamotoNaoki Yamamoto (58 patents)Tadashi KuwabaraTadashi Kuwabara (52 patents)Yutaka IgarashiYutaka Igarashi (48 patents)Shinichiro FukushimaShinichiro Fukushima (22 patents)Yukinobu TadaYukinobu Tada (21 patents)Toru NumataToru Numata (15 patents)Maki FuruiMaki Furui (3 patents)Rituko KanazawaRituko Kanazawa (2 patents)Katsuki IkutaKatsuki Ikuta (2 patents)Misuzu MochizukiMisuzu Mochizuki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (5 from 42,485 patents)


5 patents:

1. 7231130 - Magnetic recording/reproducing apparatus for searching programs recorded on magnetic tape

2. 6895393 - Electronic book distributing system by use of purchase certificate and devices therefor

3. 6389217 - Magnetic recording/reproducing apparatus for searching programs recorded on magnetic tape

4. 6038366 - Magnetic recording/reproducing apparatus for search programs recorded on

5. 5761371 - magnetic recording/reproducing apparatus for searching programs recorded

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as of
12/9/2025
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