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Note 6 - Patents and Trademarks, Net
3 Months Ended
Nov. 30, 2021
Patents and Trademarks [Member]  
Notes to Financial Statements  
Intangible Assets Disclosure [Text Block]

6.

PATENTS AND TRADEMARKS, NET

 

Patents and trademarks, net consisted of the following:

 

  

November 30, 2021

  

August 31, 2021

 

Patents and trademarks

 $3,070,704  $3,018,507 

Less accumulated amortization

  (2,360,829)  (2,308,935)
  $709,875  $709,572 

 

Patent and trademark costs are amortized over seven years. Costs incurred related to patents and trademarks are capitalized until filed and approved, at which time the amounts capitalized to date are amortized, and any further costs, including maintenance costs, are expensed as incurred. Amortization expense is estimated to be $190,000 in each of the next four fiscal years.