Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Liabilities Other Than Goodwill -Amounts related to intangible assets (Details)

Intangible Assets and Liabilities Other Than Goodwill -Amounts related to intangible assets (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 2,568,388	$ 2,552,168
Less - accumulated amortization	(1,427,463)	(1,371,145)
Intangible assets, net	1,140,925	1,181,023
Unfavorable contract liability	2,903,419	3,056,655
Less - accumulated amortization	(1,791,664)	(1,797,149)
Unfavorable contract liability, net	1,111,755	1,259,506
Product Certifications
Finite-Lived Intangible Assets [Line Items]
Intangible assets	777,465	765,850
Less - accumulated amortization	(546,094)	(532,676)
Intangible assets, net	231,371	233,174
Patents
Finite-Lived Intangible Assets [Line Items]
Intangible assets	875,626	871,021
Less - accumulated amortization	(337,696)	(314,997)
Intangible assets, net	537,930	556,024
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets	240,000	240,000
Less - accumulated amortization	(144,000)	(140,000)
Intangible assets, net	96,000	100,000
Favorable contract asset
Finite-Lived Intangible Assets [Line Items]
Intangible assets	384,465	384,465
Less - accumulated amortization	(361,968)	(355,193)
Intangible assets, net	22,497	29,272
Trademarks
Finite-Lived Intangible Assets [Line Items]
Intangible assets	26,896	26,896
Less - accumulated amortization	0	0
Intangible assets, net	26,896	26,896
In Process R&D
Finite-Lived Intangible Assets [Line Items]
Intangible assets	263,936	263,936
Less - accumulated amortization	(37,705)	(28,279)
Intangible assets, net	$ 226,231	$ 235,657