Average Co-Inventor Count = 4.21
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. Nippon Kokan Kabushiki Kaisha (4 from 487 patents)
2. Kao Corporation (2 from 3,601 patents)
3. Kao Soap Company, Ltd. (2 from 341 patents)
4 patents:
1. 5094764 - Method for supplying a lubricating oil composition
2. 4985158 - Lubricating oil composition and method for supplying same
3. 4970011 - Lubricating oil useful in the rolling of metal and a method for
4. 4663061 - Metal-working oil composition