Average Co-Inventor Count = 3.51
ph-index = 4
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. Sony Corporation (6 from 58,129 patents)
2. Tokyo Electric Co. (1 from 492 patents)
6 patents:
1. 6286143 - Data transmission apparatus
2. 5757415 - On-demand data transmission by dividing input data into blocks and each
3. 5572491 - Magneto-optical recording device capable of recording two
4. 4896238 - Tape cassette with pressable cap for fixing reel on reel base
5. 4864448 - Tape cassette
6. 4671844 - Labeling apparatus