Quarterly report pursuant to Section 13 or 15(d)

PATENTS (Details)

v3.22.2.2
PATENTS (Details) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Patents    
Gross carrying amount – patents $ 8,473,000 $ 7,949,000
Accumulated amortization – patents (6,716,000) (6,565,000)
Patents, net $ 1,757,000 $ 1,384,000