Average Co-Inventor Count = 5.46
ph-index = 2
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. Kabushiki Kaisha Toshiba (1 from 52,711 patents)
2. Tokyo Electron Limited (1 from 10,295 patents)
3. Tel Sagami Limited (1 from 33 patents)
4. Tokyo Electron Tohoku Limited (1 from 29 patents)
2 patents:
1. 5383984 - Plasma processing apparatus etching tunnel-type
2. 4970435 - Plasma processing apparatus