Growing community of inventors

Fujimino, Japan

Kazuhiro Umenaka

Average Co-Inventor Count = 1.74

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 = 119

Kazuhiro UmenakaRaizo Kuge (5 patents)Kazuhiro UmenakaYuichiro Moriyama (3 patents)Kazuhiro UmenakaHiroaki Takashima (3 patents)Kazuhiro UmenakaToshikazu Kenmotsu (3 patents)Kazuhiro UmenakaSusumu Niwa (2 patents)Kazuhiro UmenakaTsutomu Hara (1 patent)Kazuhiro UmenakaToru Ichikawa (1 patent)Kazuhiro UmenakaTakeshi Kojima (1 patent)Kazuhiro UmenakaKouichi Inoue (1 patent)Kazuhiro UmenakaSho Obara (1 patent)Kazuhiro UmenakaYuka Shibata (1 patent)Kazuhiro UmenakaKanehide Oota (1 patent)Kazuhiro UmenakaHideki Tanaka (1 patent)Kazuhiro UmenakaToshiyuki Yamagishi (1 patent)Kazuhiro UmenakaNaomi Hashimoto (1 patent)Kazuhiro UmenakaAkira Ishii (1 patent)Kazuhiro UmenakaShintaro Nobe (1 patent)Kazuhiro UmenakaAkio Yoto (1 patent)Kazuhiro UmenakaYuki Sugata (1 patent)Kazuhiro UmenakaTakuro Sakai (1 patent)Kazuhiro UmenakaAtsushi Onogi (1 patent)Kazuhiro UmenakaNaomi Hashimoto (0 patent)Kazuhiro UmenakaKazuhiro Umenaka (22 patents)Raizo KugeRaizo Kuge (21 patents)Yuichiro MoriyamaYuichiro Moriyama (7 patents)Hiroaki TakashimaHiroaki Takashima (5 patents)Toshikazu KenmotsuToshikazu Kenmotsu (4 patents)Susumu NiwaSusumu Niwa (12 patents)Tsutomu HaraTsutomu Hara (41 patents)Toru IchikawaToru Ichikawa (40 patents)Takeshi KojimaTakeshi Kojima (28 patents)Kouichi InoueKouichi Inoue (10 patents)Sho ObaraSho Obara (5 patents)Yuka ShibataYuka Shibata (3 patents)Kanehide OotaKanehide Oota (2 patents)Hideki TanakaHideki Tanaka (2 patents)Toshiyuki YamagishiToshiyuki Yamagishi (2 patents)Naomi HashimotoNaomi Hashimoto (1 patent)Akira IshiiAkira Ishii (1 patent)Shintaro NobeShintaro Nobe (1 patent)Akio YotoAkio Yoto (1 patent)Yuki SugataYuki Sugata (1 patent)Takuro SakaiTakuro Sakai (1 patent)Atsushi OnogiAtsushi Onogi (1 patent)Naomi HashimotoNaomi Hashimoto (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hosokawa Yoko Co., Ltd. (22 from 107 patents)

2. Jgc Corporation (1 from 161 patents)

3. Lotte Co., Ltd. (1 from 59 patents)


22 patents:

1. D1092234 - Pouch for packaging

2. 12103737 - Rectangular-bottomed packaging bag, and method for manufacturing rectangular-bottomed packaging bag

3. 11731387 - Bag making machine and bag making method

4. 11655089 - Spout-equipped packaging bag and manufacturing method therefor, and spout-equipped packaging bag that contains contents

5. D960714 - Pouch

6. D960716 - Pouch

7. 11254475 - Structure of mouth plug portion, and package

8. 10968020 - Self-standing bag and method for manufacturing the same

9. D842698 - Container cap for package

10. 9981793 - Gusset bag with spout

11. 9938064 - Check valve, check valve assembly and vessel equipped with check valve

12. 9630759 - Gusset bag, spout-attached gusset bag, and method of manufacturing the same

13. 8956046 - Bag with port member and connection structure thereof

14. 8834024 - Self-standing bag, production method thereof, and self-standing bag having content therein

15. 8757410 - Sealing mechanism for a cylindrical container opening using a cap having a cap body and an upper lid

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as of
12/8/2025
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