Southern Electro-Chemical Co. v. E. I. Du Pont De Nemours & Co.

I agree that if the patent is valid infringement is certain. My trouble is with the validity of the patent. I have not been able to discover invention in the method disclosed by its claims in view of so much of the prior art as we are permitted to look at and consider. Of course, had Pauling been first to conceive a rectifying column and had he been first to use it as a means to separate an admixture of sulphuric acid and nitric acid and in one operation produce the latter in concentrated form, his would have been a great invention. But Pauling did not do that or anything close to it. What he…