Average Co-Inventor Count = 5.00
ph-index = 1
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. Ishizuka Garasu Kabushiki Kaisha (1 from 7 patents)
2. Daito Kako Kabushiki Kaisha (1 from 1 patent)
3. Kabushiki Kaisha Hayashi Takatoshi Shyoten (1 from 1 patent)
4. Nagara Seishi Kabushiki Kaisha (1 from 1 patent)
1 patent:
1. 4756959 - Sheet for use in firing base plates