Average Co-Inventor Count = 4.80
ph-index = 2
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. Matsushita Electric Industrial Co., Ltd. (2 from 27,375 patents)
2. Nippon Oil Company (1 from 690 patents)
2 patents:
1. 4342547 - Rotary vane compressor with valve control of oil to bias the vanes
2. 4267064 - Refrigeration lubricating oil compositions