Average Co-Inventor Count = 2.67
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. Chiyoda Corporation (1 from 168 patents)
2. Chiyoda Chemical Engineering Construction Co., Ltd. (1 from 62 patents)
3. Nippon Glass Fiber Co., Ltd. (1 from 12 patents)
2 patents:
1. 4889766 - Prepreg sheet for flake lining and lining process using the same
2. 4765960 - Apparatus for installing pipe in multipipe type gas-liquid contact