Average Co-Inventor Count = 3.01
ph-index = 5
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. Tokyo Shibaura Denki Kabushiki Kaisha (3 from 2,916 patents)
2. New Media Development Association (2 from 5 patents)
3. Kabushiki Kaisha Toshiba (1 from 52,711 patents)
4. Institute for Personalized Information Environment (1 from 8 patents)
7 patents:
1. 5579468 - Information processing unit having function modules independently
2. 5577247 - User information management device treating communications from user as
3. 5574846 - Card windowing metaphor for application command and presentation history
4. 4685142 - Method and device for handwritten letter recognition
5. 4514826 - Relational algebra engine
6. 4280186 - Exposure apparatus using electron beams
7. 4267456 - Electron beam type exposure apparatus