Average Co-Inventor Count = 3.20
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. Battelle Memorial Institute (2 from 2,372 patents)
2. The Eastern Company (1 from 345 patents)
3. Battelle Development Corporation (1 from 175 patents)
4 patents:
1. 5897840 - Multi-chambered urine specimen container for automatic extraction and
2. 4848165 - Smear sampling apparatus
3. 4584861 - Knurling tool
4. 4299515 - Rock reinforcement system