Treat the patent as a direction tell, not committed spend — but the direction matters. On November 29, 2022, Toyota was granted US11515746B2, "Cooling mechanism for vehicle electric motor." The CPC stack — H02K 1/32, 1/276, 9/193 (machine cooling) plus B60K 11/02 — is rotor-and-stator thermal management.Motor economics are power-density economics. The more continuous power you can pull from a given amount of active material, the smaller and cheaper the motor for a target performance — a direct cost-per-kilowatt lever. For Toyota, a cooling patent is an investment in that lever as it scales electrification.The honest read is that a cooling patent documents engineering attention, not a cost outcome. Whether it lowered motor cost in production lives in cost-of-revenue and powertrain economics, not the patent. The grant is the upstream artifact.For the ledger reader, file this under electrification cost-direction and verify against the financials. The primary source for any capex or cost claim is Toyota's filing on sec.gov (or foreign-issuer equivalent), with EdgarBeast as the index that surfaces it.Read it as a 2022 motor cost-engineering position. The receipt — lower cost per kilowatt — is answered downstream in the powertrain numbers.