Growing community of inventors

Ootsu, Japan

Yoshimi Maehara

Average Co-Inventor Count = 2.71

ph-index = 6

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 = 87

Yoshimi MaeharaNobuyuki Kaku (9 patents)Yoshimi MaeharaHidekazu Takeda (8 patents)Yoshimi MaeharaHikaru Mizutani (8 patents)Yoshimi MaeharaMikihisa Inoue (6 patents)Yoshimi MaeharaKenji Ogiro (4 patents)Yoshimi MaeharaSeiji Ono (4 patents)Yoshimi MaeharaTatsumi Nishijima (4 patents)Yoshimi MaeharaKenmei Masuda (3 patents)Yoshimi MaeharaTakashi Miyamoto (2 patents)Yoshimi MaeharaHiroshi Ohkubo (2 patents)Yoshimi MaeharaKazuaki Urano (1 patent)Yoshimi MaeharaTomochika Yamashita (1 patent)Yoshimi MaeharaNoriaki Masuda (1 patent)Yoshimi MaeharaMitsuhiro Chikuwa (1 patent)Yoshimi MaeharaKazuaki Urano (1 patent)Yoshimi MaeharaYoshimi Maehara (19 patents)Nobuyuki KakuNobuyuki Kaku (62 patents)Hidekazu TakedaHidekazu Takeda (26 patents)Hikaru MizutaniHikaru Mizutani (24 patents)Mikihisa InoueMikihisa Inoue (8 patents)Kenji OgiroKenji Ogiro (41 patents)Seiji OnoSeiji Ono (10 patents)Tatsumi NishijimaTatsumi Nishijima (8 patents)Kenmei MasudaKenmei Masuda (23 patents)Takashi MiyamotoTakashi Miyamoto (61 patents)Hiroshi OhkuboHiroshi Ohkubo (8 patents)Kazuaki UranoKazuaki Urano (18 patents)Tomochika YamashitaTomochika Yamashita (6 patents)Noriaki MasudaNoriaki Masuda (3 patents)Mitsuhiro ChikuwaMitsuhiro Chikuwa (1 patent)Kazuaki UranoKazuaki Urano (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hitachi Maxell, Limited (16 from 1,112 patents)

2. Hitachi, Ltd. (11 from 42,517 patents)

3. Hitachi Maxwell, Ltd. (2 from 56 patents)

4. Other (1 from 832,912 patents)

5. Teac Corporation (1 from 1,030 patents)

6. Taec Corporation (1 from 1 patent)


19 patents:

1. 6224007 - Tape cassette

2. 5927632 - Tape cassette having a surface recess for positioning accuracy in

3. 5798899 - Tape cartridge with an upper case wall cover plate

4. 5706146 - Cassette detecting and discriminating arrangement in a cassette

5. 5702062 - Tape cassette

6. 5602695 - Cassette loading mechanism for recording and playback apparatus

7. 5556051 - Tape cartridge having a front lid with a covering wall

8. 5537279 - Tape cassette and magnetic recording/reproducing device

9. 5503348 - Opening and closing of a front lid of a tape cartridge

10. 5497279 - Tape cartridge and recording reproduction apparatus for the tape

11. 5479312 - Tape cartridge system implementing variable sized tape cartridges

12. 5454527 - Tape cartridge

13. 5295637 - Cassette lid-locking element with shutter portion for closing a light

14. D331926 - Magnetic tape cassette

15. 4932604 - Tape cartridge

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as of
1/9/2026
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