Average Co-Inventor Count = 1.20
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. Ykk Architectural Products Inc. (3 from 34 patents)
3 patents:
1. 5870859 - Water-tight structure for sliding door
2. 5657591 - Connection structure of a framework
3. 5653060 - Sliding window structure