Average Co-Inventor Count = 2.31
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. Tachikawa Spring Co., Ltd. (3 from 111 patents)
2. Rohm and Haas Company (2 from 3,389 patents)
3. Tokyo Organic Chemical Industries, Ltd. (1 from 5 patents)
6 patents:
1. 4639041 - Headrest mounting structure for a vehicle seat
2. 4583781 - Motor vehicle seat
3. 4579389 - Vehicle seat
4. 4315846 - Metal salt of N-substituted alkylenebisdithiocarbamic acid
5. 4195028 - Granular flocculants and their manufacture
6. 4186167 - Granular flocculants and their manufacture