12 sigma is actually 1.8 defects per 10^33 opportunities or if you subscribe to the bogus notion of the 1.5 sigma shift, it would be 4.3 defects per 10^26 opportunities. It is nonsense to talk about such things as no one would know how to measure or achieve such performance. The notion is only good for discussions when pontificating one's naval. 1.5 defects per million opportunities is the answer for 12 sigma. Its primarily used in the aviation industry.
12 sigma bonds.
As far as I know GE is the one who implements 12 Sigma.
Sigma Pi Sigma was created on 1921-12-11.
Sigma Iota was created on 1912-03-12.
Kappa Sigma Sigma was created on 1916-05-10.
Alpha Sigma Phi was created on 1845-12-06.
Alpha Chi Sigma was created on 1902-12-11.
Sigma Lambda Upsilon was created on 1987-12-01.
Beta Mu Sigma was created on 1987-12-17.
Sigma Phi Delta was created on 1924-04-11.
Sigma Alpha Kappa was created on 1923-12-10.
Sigma Iota Alpha was created on 1990-09-29.