Average Co-Inventor Count = 4.41
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.
Company Filing History:
1. Copal Company Limited (3 from 192 patents)
2. Fujitsu Corporation (2 from 39,245 patents)
3. Fuji Photo Film Company, Limited (2 from 16,458 patents)
5 patents:
1. 6348962 - Device for image-shooting both sides of documents
2. 6069681 - Device for image shooting both sides of documents
3. 5917796 - Magneto-optical disk apparatus having an ejector arm and magnetic field
4. 5771217 - Magneto-optical disk apparatus having a ejector arm and magnetic field
5. 4811137 - Disk cartridge shutter opening and closing mechanism