Growing community of inventors

Tokyo, Japan

Keiichi Totsuka

Average Co-Inventor Count = 2.19

ph-index = 7

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 = 418

Keiichi TotsukaHaruo Oba (3 patents)Keiichi TotsukaTakashi Sogabe (2 patents)Keiichi TotsukaChisato Numaoka (2 patents)Keiichi TotsukaToshimichi Nagashima (2 patents)Keiichi TotsukaYukinari Takashima (2 patents)Keiichi TotsukaTetsujiro Kondo (1 patent)Keiichi TotsukaJunichiro Sakata (1 patent)Keiichi TotsukaJunichi Rekimoto (1 patent)Keiichi TotsukaYoshinori Watanabe (1 patent)Keiichi TotsukaShigeru Tajima (1 patent)Keiichi TotsukaYasushi Tatehira (1 patent)Keiichi TotsukaNaohide Yamada (1 patent)Keiichi TotsukaKazutaka Uchida (1 patent)Keiichi TotsukaIra Diamond (1 patent)Keiichi TotsukaTeiyu Gotoh (1 patent)Keiichi TotsukaNubuyuki Matsushita (1 patent)Keiichi TotsukaKeiichi Totsuka (10 patents)Haruo ObaHaruo Oba (102 patents)Takashi SogabeTakashi Sogabe (81 patents)Chisato NumaokaChisato Numaoka (20 patents)Toshimichi NagashimaToshimichi Nagashima (7 patents)Yukinari TakashimaYukinari Takashima (2 patents)Tetsujiro KondoTetsujiro Kondo (701 patents)Junichiro SakataJunichiro Sakata (395 patents)Junichi RekimotoJunichi Rekimoto (169 patents)Yoshinori WatanabeYoshinori Watanabe (58 patents)Shigeru TajimaShigeru Tajima (46 patents)Yasushi TatehiraYasushi Tatehira (36 patents)Naohide YamadaNaohide Yamada (8 patents)Kazutaka UchidaKazutaka Uchida (8 patents)Ira DiamondIra Diamond (2 patents)Teiyu GotohTeiyu Gotoh (2 patents)Nubuyuki MatsushitaNubuyuki Matsushita (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (10 from 58,129 patents)


10 patents:

1. 8102333 - Display device securing mechanism and display system that rotates display devices around a rotational axis

2. 8074242 - System and method for information supply and apparatuses therefor

3. 7225457 - Information supply apparatus, information utilization apparatus, information manipulation apparatus, information supply system, information supply method, information utilization method and recording medium

4. 7202773 - Authentication information communication system and method, portable information processing device and program furnishing medium

5. 7181024 - Portable audio listening apparatus

6. D342947 - Radio tuner

7. D342520 - Combined radio tuner and clock

8. D327269 - Radio receiver

9. D321513 - Combined tape player and radio tuner

10. D308202 - Television receiver

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as of
12/3/2025
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