Growing community of inventors

Sennan, Japan

Takao Katayama

Average Co-Inventor Count = 2.14

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 = 70

Takao KatayamaHiroshi Oshima (3 patents)Takao KatayamaHirofumi Sadakane (3 patents)Takao KatayamaJinnosuke Takakura (3 patents)Takao KatayamaHisato Katoh (2 patents)Takao KatayamaNobuhide Yanagawa (1 patent)Takao KatayamaHisatake Fujioka (1 patent)Takao KatayamaManabu Miyawaki (1 patent)Takao KatayamaHirofumi Sadagane (1 patent)Takao KatayamaShigeru Takehana (1 patent)Takao KatayamaTakao Katayama (6 patents)Hiroshi OshimaHiroshi Oshima (22 patents)Hirofumi SadakaneHirofumi Sadakane (10 patents)Jinnosuke TakakuraJinnosuke Takakura (5 patents)Hisato KatohHisato Katoh (24 patents)Nobuhide YanagawaNobuhide Yanagawa (7 patents)Hisatake FujiokaHisatake Fujioka (5 patents)Manabu MiyawakiManabu Miyawaki (2 patents)Hirofumi SadaganeHirofumi Sadagane (1 patent)Shigeru TakehanaShigeru Takehana (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kubota Corporation (6 from 2,667 patents)


6 patents:

1. D319447 - Lawn mower

2. D308681 - Lawn mower

3. D307911 - Walking operator type lawn mower

4. 4882897 - Clutch control structure for a walking operator type lawn mower

5. 4745735 - Grass collecting container for grass mower

6. 4693064 - Grass collection bag for lawn mower

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as of
12/12/2025
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