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Patents | 6 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Patents | The cost of the oxidation-reduction potential (“ORP”) technology related patents for the MiOXSYS Systems was $380,000 when they were acquired and are being amortized over the remaining U.S. patent life of approximately 15 years as of the date, which expires in March 2028. Patents consist of the following:
|  | As of |  |  | As of |
|  | December 31, |  |  | June 30, |
|  | 2019 |  |  | 2019 |
Patents |  | $ | 380,000 |  |  | $ | 380,000 |
Less accumulated amortization |  |  | (172,000 | ) |  |  | (159,000 | )
Patents, net |  | $ | 208,000 |  |  | $ | 221,000 |
The amortization expense was $7 thousand for the three months ended December 31, 2019 and 2018, respectively, and $13 thousand for the six months ended December 31, 2019 and 2018 respectively.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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