Average Co-Inventor Count = 4.82
ph-index = 4
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. Sperian Protection Optical, Inc. (1 from 1 patent)
2. Micromeritics Instruments Corporation (1 from 1 patent)
3. Honeywell Safety Products Usa, Inc. (25 patents)
6 patents:
1. 12392644 - Hinged closure for gas pycnometer
2. 7390091 - Vision testing apparatus
3. D539265 - Pill-shaped on-premises electronic pager
4. D521491 - Boom box-shaped on-premises electronic pager with charging notch
5. D520490 - Pill-shaped on-premises electronic pager with flattened sides
6. D519983 - Boom box-shaped on-premises electronic pager