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PATENTS (Tables)
12 Months Ended
Sep. 30, 2021
PATENTS  
Schedule of patents

 

 

2021

 

 

2020

 

Patents

 

$910,523

 

 

$896,372

 

Accumulated amortization

 

 

(634,657)

 

 

(582,950)

 

 

 

 

 

 

 

 

 

Patents, net

 

$275,866

 

 

$313,422

 

Schedule of total estimated future amortization

Years ending September 30,

 

2022

 

$49,000

 

2023

 

 

39,000

 

2024

 

 

31,000

 

2025

 

 

29,000

 

2026

 

 

25,000

 

Thereafter

 

 

103,000

 

 

 

$276,000