• Filing Date: 2019-02-14
  • Form Type: 10-Q
  • Description: Quarterly report
v3.10.0.1
F. PATENTS
3 Months Ended
Dec. 31, 2018
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
F. PATENTS

During the three months ended December 31, 2018 and 2017, no patent impairment charges were recorded. For the three months ended December 31, 2018 and 2017, amortization of patent costs totaled approximately $12,000 and $9,000, respectively. Approximate estimated future amortization expense is as follows:

 

Nine months ending September 30, 2019   $ 31,000  
Year ending September 30,        
2020     39,000  
2021     35,000  
2022     31,000  
2023     21,000  
2024     18,000  
Thereafter     78,000  
Total   $ 253,000