Quarterly report pursuant to Section 13 or 15(d)

PATENTS (Details)

v3.24.1.1.u2
PATENTS (Details) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Patents    
Gross carrying amount – patents $ 8,473,000 $ 8,473,000
Accumulated amortization – patents (7,177,000) (7,147,000)
Patents, net $ 1,296,000 $ 1,326,000