Growing community of inventors

Kawasaki, Japan

Hiroyuki Sugihara

Average Co-Inventor Count = 3.08

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 = 39

Hiroyuki SugiharaKengo Yamakawa (2 patents)Hiroyuki SugiharaYukio Katsuyama (2 patents)Hiroyuki SugiharaKenichi Utsumi (1 patent)Hiroyuki SugiharaTakahisa Miyamoto (1 patent)Hiroyuki SugiharaYoshio Kotaki (1 patent)Hiroyuki SugiharaNobuhiko Motoyama (1 patent)Hiroyuki SugiharaHiroshi Shibuya (1 patent)Hiroyuki SugiharaKatsumi Inazawa (1 patent)Hiroyuki SugiharaHiroshi Nakazawa (1 patent)Hiroyuki SugiharaHidenori Maeda (1 patent)Hiroyuki SugiharaKohjiroh Hashimoto (1 patent)Hiroyuki SugiharaTetsuo Nagahori (1 patent)Hiroyuki SugiharaHiroyuki Sugihara (6 patents)Kengo YamakawaKengo Yamakawa (12 patents)Yukio KatsuyamaYukio Katsuyama (9 patents)Kenichi UtsumiKenichi Utsumi (51 patents)Takahisa MiyamotoTakahisa Miyamoto (14 patents)Yoshio KotakiYoshio Kotaki (11 patents)Nobuhiko MotoyamaNobuhiko Motoyama (9 patents)Hiroshi ShibuyaHiroshi Shibuya (8 patents)Katsumi InazawaKatsumi Inazawa (8 patents)Hiroshi NakazawaHiroshi Nakazawa (3 patents)Hidenori MaedaHidenori Maeda (3 patents)Kohjiroh HashimotoKohjiroh Hashimoto (3 patents)Tetsuo NagahoriTetsuo Nagahori (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fujitsu Corporation (6 from 39,228 patents)

2. Copal Company Limited (1 from 192 patents)


6 patents:

1. 6428125 - Deck apparatus equipped with a lock mechanism

2. 5793563 - Magnetic tape library apparatus having leader block engaging mechanism

3. 5781369 - Magnetic tape apparatus with an auxiliary entry/exit mechanism

4. 5673155 - Magnetic tape library apparatus having leader block engaging mechanism

5. 5402283 - Recording medium cartridge handling mechanism in library apparatus

6. 5313349 - Cartridge autoloading apparatus having two safety lock mechanisms

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12/7/2025
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