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Patent portfolio assigned to Perceptive Sensor Technologies Inc. (verified via public assignee records). Tucson, AZ (founded 2016); non-intrusive ultrasonic fluid identification for closed containers. Patents confirmed under assignee Perceptive Sensor Technologies Inc (Justia assignee page; grants incl. US11994494 'Multi-bounce acoustic signal material detection', US11500494 'Ultrasonic touch detection and decision'); exact count not enumerated (page not fully fetchable). Customers/users shown as logos on company site are government/defense agencies (logo_only). Hawk Measurement noted as a technology partner.