Average Co-Inventor Count = 2.09
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. Director-general of Agency of Industrial Science and Technology (3 from 232 patents)
2. Sumitomo Chemical Company, Limited (1 from 6,896 patents)
3. Nippon Petrochemicals Company, Limited (1 from 327 patents)
4. Japan As Represented by Director Science and Technology (1 from 1 patent)
4 patents:
1. 5200122 - Surface activating method for thermoplastic resin molded articles
2. 5077082 - Method of treating surface of shaped body formed of polypropylene resin
3. 5059447 - Method for the acitivation of a surface of a shaped body formed of a
4. 4853253 - Method of activating surface of shaped body formed of synthetic organic