Average Co-Inventor Count = 1.00
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. Hashimoto Corporation Kabushiki Kaisha (1 from 3 patents)
2. Hashimoto Koporeishon Kabushiki Kaisha (1 from 1 patent)
3. Hashimoto Koporeishon Kabushiki Kaisah (1 from 1 patent)
3 patents:
1. 4069397 - Automatic telephone answering device
2. 4058679 - Telephone answering device without outgoing message tape
3. 3984640 - Telephone answering device without outgoing message tape