3. PATENTS (Tables)
|12 Months Ended|
Mar. 31, 2021
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Schedule of patents||
Patents, net consist of the following:
Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef