Average Co-Inventor Count = 5.14
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. Kato Manufacturing Corporation Limited (3 from 3 patents)
2. Aiwa Corporation (3 from 3 patents)
3. Other (1 from 832,680 patents)
4. Agency of Industrial Science and Technology (1 from 1,037 patents)
5. Director-general of Agency of Industrial Science and Technology (1 from 232 patents)
3 patents:
1. 5943950 - Utensils for table use and cooking use
2. 5562820 - Process for purifying water
3. 5449467 - Process for purifying water