Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets

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Intangible Assets
3 Months Ended
Feb. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS INTANGIBLE ASSETS
Intangible assets consist of owned trademarks and patents for ten product lines.
 
 
February 28,
2018
 
November 30,
2017
Patents and trademarks
 
$
578,937

 
$
578,937

Less: Accumulated amortization
 
146,425

 
146,617

Intangible Assets - Net
 
$
432,512

 
$
432,320



Patents are amortized on a straight-line basis over their legal life of 17 years. Trademarks have an indefinite life and are reviewed annually for impairment or more frequently if impairment indicators occur. Amortization expense for the three months ended February 28, 2018 and 2017 amounted to $97 and $96, respectively. Estimated amortization
expenses for the years ending November 30, 2019, 2020, 2021, 2022 and 2023 are $388, $243, $243, $243 and $0, respectively.