Chicken IgG from Egg White, Info please?

[Frederick W Hyde]

You can also find the information in US Patent #5,420,253, which teaches 
the large scale single-step purification of chicken antibody from egg 
yolks, assigned to the Willmar Poultry Co., of Willmar, Minnesota, USA. 
The patent is currently licensed to a small firm called Ichem in 
Minneapolis. Their E-mail address is ichem at mm.com.

Hope this helps.