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Patents and Other Intangible Assets (Details) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Patents | $ 1,963,000 | $ 2,097,000
Trademarks | 78,000 | 64,000
Other | 8,000 | 8,000
Patents and other intangible assets | 2,049,000 | 2,169,000
Accumulated amortization | (290,000) | (313,000)
Finite-Lived Intangible Assets, Net | 1,759,000 | 1,856,000
Patents Pending [Member] |  |
Patents | 1,202,000 | 1,167,000
Issued Patents [Member] |  |
Patents | 761,000 | 930,000
Trademarks Pending [Member] |  |
Trademarks | 55,000 | 41,000
Registered Trademarks [Member] |  |
Trademarks | $ 23,000 | $ 23,000

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- Definition Gross carrying amount before accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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