Average Co-Inventor Count = 1.58
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 Industrial Equipment Systems Co., Ltd. (4 from 496 patents)
2. Mitsubishi Jidosha Kogyo Kabushiki Kaisha (1 from 1,627 patents)
5 patents:
1. 10030646 - Gas compressor
2. 9897103 - Compressor
3. 9347338 - Gas compressor
4. 8955323 - Compressor
5. 6740990 - Compulsory drive unit for electrical equipment in a vehicle