Average Co-Inventor Count = 1.00
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. Hangzhou Great Star Industrial Co., Ltd. (5 from 148 patents)
2. Hangzhou Great Star Tools Co., Ltd. (5 from 69 patents)
5 patents:
1. 10393520 - Bubble level using reflection
2. 10168132 - Tapeline and blocking member for tapeline end
3. 9891047 - Spirit level having reflection bubble
4. D768517 - Spirit level having reflection bubble
5. D754552 - Spirit level having reflection bubble