Average Co-Inventor Count = 1.50
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. Attention System Co., Ltd. (2 from 2 patents)
2. Shoei Printing Co., Ltd. (1 from 4 patents)
3. Amc Co., Ltd. (1 from 1 patent)
3 patents:
1. 5986565 - Individual recognition system
2. 5921585 - Blockade seal
3. 5426520 - Method of legitimate product identification and seals and identification