Average Co-Inventor Count = 3.20
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. Rohm Gmbh (3 from 362 patents)
2. Rohm Gmbh Chemische Fabrik (1 from 104 patents)
4 patents:
1. 4907648 - Plastic crosscurrent heat exchanger
2. 4569166 - Construction including a supported element of extruded synthetic resin
3. 4422268 - Barrel-vault roofing element
4. 4371575 - Rigid, one-piece, biaxially stretched shaped body of synthetic resin and