Average Co-Inventor Count = 1.21
ph-index = 5
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.
Company Filing History:
1. Oki Data Corporation (9 from 1,875 patents)
2. Sony Group Corporation (1 from 3,416 patents)
3. Sony Semiconductor Solutions Corporation (1 from 2,856 patents)
4. Japan Tobacco Inc. (1 from 1,037 patents)
5. Seikagaku Kogyo Kabushiki Kaisha (1 from 41 patents)
12 patents:
1. 12372346 - Range-finding apparatus and range-finding method
2. 10534301 - Medium supply device and image forming apparatus
3. 9759650 - Filling-capacity measuring method
4. 9329551 - Medium cassette and image forming apparatus
5. 9008534 - Rotor support mechanism and image formation apparatus
6. 8770575 - Sheet supply device and image forming apparatus
7. 8583023 - Developer conveying apparatus, developer storage container, and image forming apparatus
8. 8380110 - Drive transmission device and image forming apparatus
9. 8103180 - Image forming device and image forming method thereof
10. 7469112 - Image forming apparatus having an air-cooling system
11. 7277670 - Double-sided image forming apparatus
12. 5814621 - Drug composition and process for preparing the same