Growing community of inventors

Kanagawa, Japan

Hisashi Ishijima

Average Co-Inventor Count = 3.32

ph-index = 12

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 = 762

Hisashi IshijimaTakashi Yano (11 patents)Hisashi IshijimaYasuhiro Tabata (11 patents)Hisashi IshijimaYuki Uchida (5 patents)Hisashi IshijimaToshihiro Kudara (5 patents)Hisashi IshijimaTsukuru Kai (2 patents)Hisashi IshijimaKiyoshi Sakai (1 patent)Hisashi IshijimaHidetoshi Yano (1 patent)Hisashi IshijimaMakoto Obu (1 patent)Hisashi IshijimaTatsuo Tani (1 patent)Hisashi IshijimaTomoji Ishikawa (1 patent)Hisashi IshijimaTakaaki Yanagisawa (1 patent)Hisashi IshijimaYasushi Akiba (1 patent)Hisashi IshijimaSeiji Oka (1 patent)Hisashi IshijimaShohzoh Miyawaki (1 patent)Hisashi IshijimaMitsuaki Urakawa (1 patent)Hisashi IshijimaMasayuki Ohtani (1 patent)Hisashi IshijimaHiroyasu Itou (1 patent)Hisashi IshijimaMasaaki Nagano (1 patent)Hisashi IshijimaTetsuo Yamaoka (1 patent)Hisashi IshijimaTeruzo Hasumi (1 patent)Hisashi IshijimaHitoshi Sekine (1 patent)Hisashi IshijimaHisashi Ishijima (19 patents)Takashi YanoTakashi Yano (145 patents)Yasuhiro TabataYasuhiro Tabata (34 patents)Yuki UchidaYuki Uchida (19 patents)Toshihiro KudaraToshihiro Kudara (5 patents)Tsukuru KaiTsukuru Kai (66 patents)Kiyoshi SakaiKiyoshi Sakai (77 patents)Hidetoshi YanoHidetoshi Yano (57 patents)Makoto ObuMakoto Obu (46 patents)Tatsuo TaniTatsuo Tani (45 patents)Tomoji IshikawaTomoji Ishikawa (36 patents)Takaaki YanagisawaTakaaki Yanagisawa (28 patents)Yasushi AkibaYasushi Akiba (22 patents)Seiji OkaSeiji Oka (18 patents)Shohzoh MiyawakiShohzoh Miyawaki (5 patents)Mitsuaki UrakawaMitsuaki Urakawa (4 patents)Masayuki OhtaniMasayuki Ohtani (3 patents)Hiroyasu ItouHiroyasu Itou (3 patents)Masaaki NaganoMasaaki Nagano (2 patents)Tetsuo YamaokaTetsuo Yamaoka (2 patents)Teruzo HasumiTeruzo Hasumi (1 patent)Hitoshi SekineHitoshi Sekine (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (18 from 28,544 patents)

2. Ricoh Corporation (4 from 233 patents)

3. Other (1 from 832,680 patents)


19 patents:

1. 9111008 - Document information management system

2. 8554786 - Document information management system

3. 7624045 - System and method for transmitting information regarding supplies and suppliers for image forming equipment

4. 7599864 - System and method for transmitting information regarding supplies and suppliers for image forming equipment

5. 7512874 - Document information management system

6. 7363580 - Intermediate address table for converting position information to an address of a link structure correlated information file on a hypertext document

7. 7321867 - System and method for transmitting information regarding supplies and suppliers for image forming equipment

8. 7227655 - Utilizing otherwise unused space on cover or partition sheets

9. 6910184 - Document information management system

10. 6658408 - Document information management system

11. 6537324 - Generating and storing a link correlation table in hypertext documents at the time of storage

12. 6529788 - Recycling system and recycling method

13. 6381593 - Document information management system

14. 6356923 - Document information management system

15. 6317570 - Field service system for image forming devices

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