Annual report pursuant to Section 13 and 15(d)

3. PATENTS, NET

v3.21.2
3. PATENTS, NET
12 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
PATENTS, NET

3. PATENTS, NET

 

Patents, net consist of the following:

 

    March 31, 2021     March 31, 2020  
Issued patents   $ 157,442     $ 157,442  
Accumulated amortization     (154,691 )     (154,141 )
Issued patents, net of accumulated amortization     2,751       3,301  
Patents pending     54,203       54,203  
Patents, net   $ 56,954     $ 57,504  

 

Amortization expense for our capitalized issued patents for each of the fiscal years ended March 31, 2021 and 2020 was $550 and $9,164, respectively. As several patents expired during the fiscal year ended March 31, 2020 and only one capitalized patent remains to be amortized, future amortization expense on patents is estimated to be approximately $550 per year based on the estimated life of the patent. The weighted average remaining life of our remaining capitalized patent is approximately 5 years.