Growing community of inventors

Tokyo, Japan

Takeshi Kuwana

Average Co-Inventor Count = 3.33

ph-index = 9

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 = 562

Takeshi KuwanaYasuhiro Kowa (5 patents)Takeshi KuwanaKunio Hatsumoto (5 patents)Takeshi KuwanaMasashi Yamada (1 patent)Takeshi KuwanaTakashi Kato (1 patent)Takeshi KuwanaToru Goto (1 patent)Takeshi KuwanaYasuhiko Komiya (1 patent)Takeshi KuwanaRikiya Kato (1 patent)Takeshi KuwanaShoji Toida (1 patent)Takeshi KuwanaSeiichi Itoh (1 patent)Takeshi KuwanaMinoru Morita (1 patent)Takeshi KuwanaKazunori Iwasaki (1 patent)Takeshi KuwanaKunio Matsuda (1 patent)Takeshi KuwanaYoshiya Nishino (1 patent)Takeshi KuwanaShigeru Tsuchiya (1 patent)Takeshi KuwanaTamotsu Kawasaki (1 patent)Takeshi KuwanaTooru Goto (1 patent)Takeshi KuwanaTakeshi Kuwana (10 patents)Yasuhiro KowaYasuhiro Kowa (14 patents)Kunio HatsumotoKunio Hatsumoto (14 patents)Masashi YamadaMasashi Yamada (81 patents)Takashi KatoTakashi Kato (37 patents)Toru GotoToru Goto (21 patents)Yasuhiko KomiyaYasuhiko Komiya (18 patents)Rikiya KatoRikiya Kato (11 patents)Shoji ToidaShoji Toida (10 patents)Seiichi ItohSeiichi Itoh (6 patents)Minoru MoritaMinoru Morita (6 patents)Kazunori IwasakiKazunori Iwasaki (4 patents)Kunio MatsudaKunio Matsuda (4 patents)Yoshiya NishinoYoshiya Nishino (4 patents)Shigeru TsuchiyaShigeru Tsuchiya (3 patents)Tamotsu KawasakiTamotsu Kawasaki (2 patents)Tooru GotoTooru Goto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Sanso Corporation (8 from 182 patents)

2. Nippon Sanso Kabushiki Kaisha (1 from 24 patents)

3. Japan Oxygen, Co., Ltd. (1 from 24 patents)


10 patents:

1. 6098834 - Cap for beverage container

2. D406011 - Cup with lid

3. D406006 - Lid for a container

4. D404613 - Cup with lid

5. D398815 - Cup

6. D381243 - Cap for a drink container

7. 5596921 - Thermally insulated cooking device

8. 5251542 - Heat insulating cooking vessel

9. 4990254 - Portable water purifier

10. 4669632 - Evacuated heat insulation unit

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as of
12/8/2025
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