Airspace Systems
https://www.reuters.com/article/us-health-coronavirus-drones/california-startup-aims-to-monitor-social-distancing-and-face-masks-using-drones-idUSKBN23I3JG
Small (11-49 employees)
Techmax
https://www.covidinnovations.com/home/29062020/indian-company-techmax-solution-designs-toucheless-elevator-panels-to-fight-covid
Donut Robotics
https://www.forbes.com/sites/simonchandler/2020/06/26/coronavirus-japanese-firm-unveils-smart-face-mask-that-connects-to-phones/#8cef1d93f3a0
Bike2Box
https://www.covidinnovations.com/home/02072020/polish-company-bike2box-introduces-temporary-bicycle-parking-boxes-to-meet-growing-demand-post-lockdown
First Due
https://www.forbes.com/sites/giacomotognini/2020/04/01/coronavirus-business-tracker-how-the-private-sector-is-fighting-the-covid-19-pandemic/#46c6ed0d5899
GlobeKeeper
https://www.forbes.com/sites/giacomotognini/2020/04/01/coronavirus-business-tracker-how-the-private-sector-is-fighting-the-covid-19-pandemic/#46c6ed0d5899