Average Co-Inventor Count = 3.53
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. The Nippon Signal Co., Ltd. (5 from 89 patents)
5 patents:
1. 5867775 - Fail-safe signal transmitting apparatus producing a logical product of
2. 5793197 - Apparatus for confirming stop of movable portion
3. 5734269 - Bridge circuit fault monitoring apparatus using an output signal level
4. 5717302 - Motor stopped verification apparatus
5. 5640006 - Control circuit for a fail-safe multi-axis light beam type sensor