Annual report pursuant to Section 13 and 15(d)

3. PATENTS

v3.19.2
3. PATENTS
12 Months Ended
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
PATENTS

3. PATENTS

 

Patents consist of the following:

 

    March 31, 2019     March 31, 2018  
Patents   $ 211,645     $ 211,645  
Accumulated amortization     (144,977 )     (135,813 )
    $ 66,668     $ 75,832  

 

Amortization expense for patents for each of the years ended March 31, 2019 and 2018 was $9,164. Future amortization expense on patents is estimated to be approximately $9,000 per year based on the estimated life of the patents. The weighted average remaining life of our patents is approximately 2.1 years.