ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,675, issued on Nov. 18, was assigned to Eugen Seitz AG (Wetzikon, Switzerland).
"Solenoid valve" was invented by Manuel Keel (Wildegg, Switzerland) and Marco Erni (Buttwil, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A solenoid valve has an electromagnet with a coil, an RFID tag for identifying the solenoid valve, and an antenna for unidirectional or bidirectional communication with the RFID tag. The antenna is the coil of the electromagnet. Using the coil of an electromagnet for communication with an RFID tag permits inexpensive quality assurance when using solenoid valves, in particular in blow moulding machines."
The patent was fi...