Growing community of inventors

Kitakyushu, Japan

Hisashi Koga

Average Co-Inventor Count = 2.86

ph-index = 2

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 = 14

Hisashi KogaYukinori Kubozono (5 patents)Hisashi KogaHaruki Matsuda (4 patents)Hisashi KogaAtsuko Yamasaki (2 patents)Hisashi KogaTsutomu Kido (2 patents)Hisashi KogaYuichi Oda (2 patents)Hisashi KogaHideki Tanimoto (1 patent)Hisashi KogaKoki Shinohara (1 patent)Hisashi KogaKenji Hatama (1 patent)Hisashi KogaHisashi Koga (6 patents)Yukinori KubozonoYukinori Kubozono (12 patents)Haruki MatsudaHaruki Matsuda (7 patents)Atsuko YamasakiAtsuko Yamasaki (4 patents)Tsutomu KidoTsutomu Kido (3 patents)Yuichi OdaYuichi Oda (2 patents)Hideki TanimotoHideki Tanimoto (20 patents)Koki ShinoharaKoki Shinohara (18 patents)Kenji HatamaKenji Hatama (14 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toto Ltd. (5 from 1,192 patents)

2. Panasonic Corporation (1 from 16,453 patents)


6 patents:

1. 10119260 - Discharge valve apparatus, flush water tank apparatus, and flush toilet

2. 9499964 - Flush water supply device, flush water tank assembly with flush water supply device, and flush toilet with flush water tank assembly

3. 8918922 - Water discharge valve device and flush water tank device with same

4. 8745772 - Discharge valve apparatus and rinse water tank apparatus fitted therewith

5. 8720480 - Flush water supply device, flush water tank assembly with flush water supply device, and flush toilet with flush water tank assembly

6. 7562381 - Camera unit and camera unit control method capable of avoiding confusion when operated by a plurality of users

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as of
12/20/2025
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