Average Co-Inventor Count = 4.00
ph-index = 3
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. Hitachi Cable, Inc. (3 from 836 patents)
3 patents:
1. 5356665 - Method of manufacturing a pipe coated with a resin layer on the inner
2. 5207248 - Pipe coated with a resin layer on the inner surface thereof
3. 4838063 - Method for manufacturing metallic tube members