Servomyces. I don't know the Patent numbers but if you Google it and my name you will find all you need to know.
My ex employer is the beneficiary of all financial rewards from this product.
Servomyces is used by two major Japanese brewing groups in the production of lite beers, Happoschu, for domestic consumption. It is used in SE Asia also. In the USA it is sold to homebeer and wine makers in 5g sachets; maybe about 1 million per year.