Average Co-Inventor Count = 4.00
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. Sony Corporation (1 from 58,130 patents)
2. Nihon Nohyaku Co., Ltd. (1 from 181 patents)
3. Hitachi, Ltd. (42,494 patents)
4. Ricoh Company, Ltd. (28,559 patents)
5. Hitachi Astemo Ltd. (1,205 patents)
2 patents:
1. 9433212 - Plant growth regulator and method for using the same
2. 4166624 - Record player