Growing community of inventors

Yokohama, Japan

Keiji Ihara

Average Co-Inventor Count = 1.68

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 = 32

Keiji IharaToshinori Takahashi (5 patents)Keiji IharaYoshitaka Suzuki (3 patents)Keiji IharaSeiichi Tanabe (3 patents)Keiji IharaOsamu Goto (2 patents)Keiji IharaYuji Okada (2 patents)Keiji IharaShigeru Kato (1 patent)Keiji IharaKaku Hirose (1 patent)Keiji IharaYoshihiro Nishiyama (1 patent)Keiji IharaKeiji Ihara (13 patents)Toshinori TakahashiToshinori Takahashi (20 patents)Yoshitaka SuzukiYoshitaka Suzuki (28 patents)Seiichi TanabeSeiichi Tanabe (3 patents)Osamu GotoOsamu Goto (2 patents)Yuji OkadaYuji Okada (2 patents)Shigeru KatoShigeru Kato (11 patents)Kaku HiroseKaku Hirose (1 patent)Yoshihiro NishiyamaYoshihiro Nishiyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Jvc Kenwood Corporation (6 from 1,356 patents)

2. Victor Company of Japan, Limited (5 from 2,887 patents)

3. G-printec, Inc. (2 from 4 patents)


13 patents:

1. 9955044 - Printer, printing system, and card manufacturing method

2. 9840089 - Printer, printing system, and card manufacturing method

3. 9701132 - Image formation apparatus and method using cleaning transfer and unused frame cueing

4. 9623674 - Image forming apparatus, retransfer printer, and image forming method

5. 9614997 - Gradation data generation device and method

6. 9604467 - Printing apparatus with controllable back tension on ink film and transfer film

7. 8668396 - Thermal transfer printing method and apparatus

8. 8231935 - Thermal transfer printing method and apparatus

9. 8011841 - Re-transfer printing machine and method thereof

10. 7626604 - Thermal transfer printing machine

11. 7471304 - Card manufacturing method and apparatus thereof

12. 7387257 - Card recording apparatus and a card storage cassette

13. 7119823 - Retransfer printing method and printing apparatus thereof

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as of
12/7/2025
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