Inventor · disambiguated record
Johan Spijkerman
Also filed as: SPIJKERMAN JOHAN
2 granted patents·32 citations·filing 1978–1979
62Inventor score
Top patents by PatentIndex Score
2 records- 0180US4212342AMethod and apparatus for regulating the bath level of a continuous casting moldCONCAST AG·Filed 1978·Granted Jul 15, 1980·18 cites·15 claims
- 0252US4314479AMethod and apparatus for transmitting and receiving electromagnetically generated and received ultrasonic pulsesSTUDSVIK ENERGITEKNIK AB·Filed 1979·Granted Feb 9, 1982·14 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →