Average Co-Inventor Count = 1.54
ph-index = 13
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. Brother Kogyo Kabushiki-kaisha (260 from 17,514 patents)
2. Brother Industries, Ltd. (9 from 972 patents)
3. Brother Kogyo Kabuhsiki Kaisha (1 from 3 patents)
270 patents:
1. 12416896 - Developing cartridge provided with cover
2. 12411439 - Image forming apparatus including process cartridge, and toner cartridge having toner shutter pivotally movable in a state where toner cartridge is attached to process cartridge
3. 12405552 - Developing cartridge capable of reducing size of image forming apparatus
4. 12379680 - Developing cartridge having coupling and developing roller
5. 12366821 - Drum cartridge including electrical contact surface movable relative to drum frame
6. 12360477 - Developing cartridge
7. 12339614 - Method for removing and attaching first holder member relative to second holder member supported by housing in cartridge
8. 12332598 - Cartridge including holder for holding electrical contact surface and method of recycling cartridge
9. 12321110 - Developing cartridge having coupling and developing roller
10. 12275616 - Layer transfer film cartridge, and layer transfer device
11. 12271144 - Developing cartridge
12. 12271142 - Developing cartridge including electrically non-conductive collar covering end portion of developing-roller shaft
13. 12271148 - Drum unit having electrical contact surface positioned at outer surface of frame and image forming apparatus provided with the same
14. 12271141 - Image forming apparatus
15. 12242213 - Cartridge including holder that holds electrical contact surface and has hole overlapped with the same