Growing community of inventors

Kanagawa, Japan

Hirofumi Horikawa

Average Co-Inventor Count = 2.81

ph-index = 3

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 = 86

Hirofumi HorikawaSadao Takahashi (4 patents)Hirofumi HorikawaToshiyuki Furuta (4 patents)Hirofumi HorikawaYuuta Hamada (4 patents)Hirofumi HorikawaTomohiko Beppu (4 patents)Hirofumi HorikawaNaoki Kozuka (4 patents)Hirofumi HorikawaSatoshi Suga (4 patents)Hirofumi HorikawaYasuhiro Sato (2 patents)Hirofumi HorikawaHiroko Mano (2 patents)Hirofumi HorikawaYasuhiro Ono (2 patents)Hirofumi HorikawaTadashi Honda (2 patents)Hirofumi HorikawaKengo Yamamoto (2 patents)Hirofumi HorikawaTakashi Ohkuma (2 patents)Hirofumi HorikawaYusuke Ohta (1 patent)Hirofumi HorikawaAiko Ohtsuka (1 patent)Hirofumi HorikawaKeiji Omura (1 patent)Hirofumi HorikawaHirofumi Horikawa (10 patents)Sadao TakahashiSadao Takahashi (57 patents)Toshiyuki FurutaToshiyuki Furuta (42 patents)Yuuta HamadaYuuta Hamada (19 patents)Tomohiko BeppuTomohiko Beppu (15 patents)Naoki KozukaNaoki Kozuka (7 patents)Satoshi SugaSatoshi Suga (6 patents)Yasuhiro SatoYasuhiro Sato (65 patents)Hiroko ManoHiroko Mano (18 patents)Yasuhiro OnoYasuhiro Ono (15 patents)Tadashi HondaTadashi Honda (12 patents)Kengo YamamotoKengo Yamamoto (6 patents)Takashi OhkumaTakashi Ohkuma (5 patents)Yusuke OhtaYusuke Ohta (10 patents)Aiko OhtsukaAiko Ohtsuka (8 patents)Keiji OmuraKeiji Omura (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (10 from 28,546 patents)


10 patents:

1. 10360572 - Image processing system, method and computer program product for evaluating level of interest based on direction of human action

2. 9661278 - Imaging device, imaging system, and imaging method

3. 8310689 - Document managing apparatus, document managing system, and document managing method

4. 8203743 - Form processing device including a written image extraction device

5. 8139250 - Image processing apparatus and image processing method for printing an acquired image

6. 8111416 - Image processing apparatus, image processing method, and image processing program for processing a predetermined code image

7. 7982141 - Coordinate detecting device, writing instrument, and coordinate inputting system

8. 7973960 - Document processing system

9. 7787712 - Electronic document creating apparatus

10. 7489415 - Document processing system

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12/10/2025
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