Average Co-Inventor Count = 3.00
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. Konishiroku Photo Industry Co., Ltd. (1 from 1,252 patents)
2. Tokyo Electric Co. (1 from 492 patents)
1 patent:
1. 4441110 - Printing head protecting device in ink jet printer