Quarterly report pursuant to Section 13 or 15(d)

PATENTS (Details)

v3.22.1
PATENTS (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Patents, net $ 1,833,000 $ 1,384,000
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount – patents 8,473,000 7,949,000
Accumulated amortization – patents (6,640,000) (6,565,000)
Patents, net $ 1,833,000 $ 1,384,000