Property and Equipment, Net

9 Months Ended

12 Months Ended

Sep. 30, 2022

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

NOTE 6 — PROPERTY AND EQUIPMENT, NET

Property and equipment, net consisted of the following:

	September 30, 2022			December 31, 2021
Pilot production equipment	$	4,662		$	4,041
Laboratory equipment		2,291			2,287
Leasehold improvements		3,509			3,439
Furniture, fixtures, and other equipment		207			242
Property and equipment, at cost		10,669			10,009
Less: accumulated depreciation		(6,845	)		(5,799	)
Property and equipment, net	$	3,824		$	4,210

Pilot production equipment, above, includes construction in progress of $384 as of September 30, 2022. Depreciation and amortization expense
was $386 and $441 for the three months ended September 30, 2022 and 2021, respectively, and $1,116 and $1,068 for the nine months ended
September 30, 2022 and 2021, respectively. 

5. PROPERTY AND EQUIPMENT, NET

Property and equipment, net consisted of the following as of December 31:

	2021			2020
Pilot production equipment	$	4,041		$	2,178
Lab equipment		2,287			2,313
Leasehold improvements		3,439			3,437
Construction in progress		—			1,550
Computers and software		157			152
Furniture and fixtures		85			85
		10,009			9,715
Less: accumulated depreciation and amortization		(5,799	)		(4,464	)
Total property and equipment, net	$	4,210		$	5,251

Construction in progress is primarily comprised of the construction of new production pilot equipment. The construction was complete in the third quarter of the year ended December 31, 2021 and assets amounting to $1,865 were placed in service.

Depreciation expense related to property and equipment was $1,441 and $1,236 for the years ended December 31, 2021 and 2020, respectively.