Average Co-Inventor Count = 2.90
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. E.i. Dupont De Nemours and Company (2 from 16,338 patents)
2. Mishima Paper Co., Ltd. (2 from 8 patents)
3. Ricoh Company, Ltd. (1 from 28,546 patents)
4. Tohoku Ricoh Co., Ltd. (1 from 234 patents)
5. Mishima Paper Ltd. (1 from 1 patent)
3 patents:
1. 6977111 - Multi-layer paper peelable into at least two thin sheets
2. 5667900 - Aramid paper with high surface smoothness
3. 5316839 - Heat resistant, flame resistant conducting sheet having an electrical