Average Co-Inventor Count = 2.18
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. Ucc Ueshima Coffee Co., Ltd. (4 from 8 patents)
2. Kashiwara Seitai Co., Ltd. (1 from 6 patents)
3. Kaken Kogyo Co., Ltd. (1 from 4 patents)
4. Marubeni Plax Corporation (1 from 1 patent)
4 patents:
1. 9688523 - Cap opening tool set and cap opener
2. 9028897 - Beverage extraction filter
3. D651096 - Beverage extraction filter
4. 5927336 - Check valve, pouch with the check valve, and manufacturing apparatus