Average Co-Inventor Count = 2.61
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. Fujitsu Corporation (3 from 39,245 patents)
2. Dphi Acquisitions, Inc. (1 from 109 patents)
4 patents:
1. 6809903 - Low profile cartridge for data storage disk
2. 6644580 - Take up assembly for wrapping spaced tape portions
3. 6565028 - Tape pin load/unload control mechanism
4. 6540167 - Take up assembly door mechanism