Quarterly report [Sections 13 or 15(d)]

PATENTS (Details)

v3.25.3
PATENTS (Details) - USD ($)
Sep. 30, 2025
Dec. 31, 2024
Patents    
Gross carrying amount – patents $ 8,887,000 $ 8,473,000
Accumulated amortization – patents (7,371,000) (7,268,000)
Patents, net $ 1,516,000 $ 1,205,000