Johan Spijkerman — 2 Patents at Concast Ag

Johan Spijkerman has been granted 2 US patents while listed as an inventor at Concast Ag. The first was granted in 1980 and the most recent in February 1982. Johan Spijkerman ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Johan Spijkerman in Nyköping, SE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4314479	Method and apparatus for transmitting and receiving electromagnetically generated and received ultrasonic pulses	—	1982-02-09
4212342	Method and apparatus for regulating the bath level of a continuous casting mold	Sten Linder	1980-07-15

Johan Spijkerman — 2 Patents

Issued Patents All Time

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