Average Co-Inventor Count = 5.78
ph-index = 10
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. Ricoh Company, Ltd. (10 from 28,544 patents)
2. Other (1 from 832,680 patents)
3. Hodogaya Chemical Co., Ltd. (1 from 328 patents)
11 patents:
1. 7071285 - Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus
2. 6919419 - AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTRO-PHOTOGRAPHIC PHOTOCONDUCTOR, ELECTRO-PHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE
3. 6790571 - Aromatic polycarbonate resin, electrophotographic photoconductor, process cartridge, and electrophotographic image forming method and apparatus
4. 6664361 - Diphenol compound, aromatic polycarbonate and electrophotoconductive photoconductor
5. 6576386 - AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATION OF THE POLYCARBONATE RESIN, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS, AND PROCESS CARTRIDGE
6. 6486293 - Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductor
7. 6444387 - Image bearing material, electrophotographic photoreceptor using the image bearing material, and image forming apparatus using the photoreceptor
8. 6303736 - Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductor
9. 6210848 - Electrophotographic photoconductor, and process cartridge and image forming apparatus using the same
10. 6187494 - Electrophotographic photoconductor and aromatic polycarbonate resin for use in the photoconductor
11. 6187492 - Electrophotographic photoconductor and method of producing aromatic polycarbonate resin for use in the photoconductor