Growing community of inventors

Fussa, Japan

Hiroshi Ohkubo

Average Co-Inventor Count = 2.64

ph-index = 5

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 = 43

Hiroshi OhkuboTakashi Miyamoto (6 patents)Hiroshi OhkuboYoshimi Maehara (2 patents)Hiroshi OhkuboYoshiaki Sakai (1 patent)Hiroshi OhkuboKazuaki Urano (1 patent)Hiroshi OhkuboYoh Kamei (1 patent)Hiroshi OhkuboMitsuru Hasegawa (1 patent)Hiroshi OhkuboShinzi Umehara (1 patent)Hiroshi OhkuboKazuaki Urano (1 patent)Hiroshi OhkuboHirokazu Miyao (1 patent)Hiroshi OhkuboMitsutoshi Kondo (1 patent)Hiroshi OhkuboHiroshi Ohkubo (8 patents)Takashi MiyamotoTakashi Miyamoto (61 patents)Yoshimi MaeharaYoshimi Maehara (19 patents)Yoshiaki SakaiYoshiaki Sakai (29 patents)Kazuaki UranoKazuaki Urano (18 patents)Yoh KameiYoh Kamei (3 patents)Mitsuru HasegawaMitsuru Hasegawa (3 patents)Shinzi UmeharaShinzi Umehara (1 patent)Kazuaki UranoKazuaki Urano (1 patent)Hirokazu MiyaoHirokazu Miyao (1 patent)Mitsutoshi KondoMitsutoshi Kondo (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Teac Corporation (7 from 1,030 patents)

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

3. Hitachi Maxwell, Ltd. (1 from 56 patents)

4. Taec Corporation (1 from 1 patent)


8 patents:

1. 5798899 - Tape cartridge with an upper case wall cover plate

2. 5583711 - Greater capacity writing method for a belt-driven tape cartridge or the

3. 5372321 - Tape transport apparatus having pulley and pulley drive motor provided

4. 5315462 - Cartridge loading device having side-locking mechanism

5. 5277352 - Reduced height tape driver

6. 5272579 - Mechanism for loading tape cartridge into tape driving apparatus

7. D331926 - Magnetic tape cassette

8. 4748526 - Head cleaning cassette for magnetic tape cassette apparatus

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as of
12/4/2025
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