Aerogel

Grader A: hit

Commercial aerogel insulation blankets (e.g. Aspen Aerogels Spaceloft) have been manufactured since about 2000.

Test: D37 Horizons: aerogel products buyable by ordinary businesses or consumers by 2023 (earlier counts).

• Aerogel (Wikipedia) (2000): Commercial manufacture of aerogel blankets began around 2000; Spaceloft used for thermal insulation.

Grader B: hit

Aspen Aerogels sold aerogel insulation blankets from the early 2000s (IPO 2014); aerogel-insulated apparel and Cabot Lumira glazing were also sold.

Test: Aerogel products could be bought by consumers or businesses by 2023 (earlier counts).

• Aspen Aerogels (2014): Commercial aerogel blanket insulation for industry and buildings.