Sankin Industry Co.
11Patents
0Active
11Granted
32Portfolio score
Filing activity: Oct 13, 1977 → Oct 2, 1987
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4404150A | Cyclic pyrophosphate derivatives and their preparation | Chemistry; Metallurgy | 32 | Expired |
| US4267133A | Manufacture of denture base | Human Necessities | 24 | Expired |
| US4565526A | Orthodontic appliance | Human Necessities | 21 | Expired |
| US4397944A | Compositions for diagnosis of dental caries activity | Human Necessities | 15 | Expired |
| US4485823A | Apparatus for diagnosing environmental tissue of tooth | Human Necessities | 15 | Expired |
| US4442239A | Phosphate derivatives, process for producing phosphate derivatives and fillers for human hard tissues containing the same | Chemistry; Metallurgy | 11 | Expired |
| US4419072A | Handy torch | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4824373A | Swaged metal denture base | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4154717A | Hydraulic dental cement composition | Human Necessities | 5 | Expired |
| US4202687A | Low melting point Ni-Cr alloy for cast dental products | Chemistry; Metallurgy | 1 | Expired |
| US4339558A | Hardening resin compositions | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.