“ A long line of cases has held it to be an essential requirement for the validity of a patent that the subject-matter display 'invention', 'more ingenuity * * * than the work of a mechanic skilled in the art.' Hicks v. ”

“ Such an ink is of no particular value in the printing of newspapers or other publications which use absorbent paper. This can be done acceptably with ordinary inks containing linseed oil which is non-volatile at all relevant temperatures. The paper absorbs the ink when one side is printed, and the other side can be printed immediately without danger of smudging.
But the ink disclosed in the patent does have utility in the printing of magazines and other materials which use smooth non-absorbent paper. ”

“ A narrow cut of petroleum consists of only a few kinds of hydrocarbons, and consequently evaporates consistently since each of the hydrocarbons has substantially the same vapor pressure curve. The allegedly infringing inks similarly are made with narrow cuts of petroleum. All of these solvents have the peculiar quality of being relatively non-volatile at ordinary room temperature but highly volatile at a temperature of 150 C., a temperature to which paper can safely be heated without burning. ”

“ The individual reward is only the lure to bring about this much broader objective. Every patent granted benefits society by adding to the sum total of human knowledge, but that is not enough, and that alone will not achieve the ultimate goal of the patent system.' TNEC Hearings, Part 3, p. 857.↑ The relevant part of the Hanson article, which appears in the record, is as follows: 'The solvents available have different boiling points ranging through a broad scale, but unfortunately for this problem their vapor pressure curves are nearly parallel. ”

“ The purpose is much deeper and the effect much wider than individual gain. It is the promotion of science and the advancement of the arts looking to the general welfare of the Nation that the patent laws hope to accomplish. ”

“ Its inducement is directed to disclosure of advances in knowledge which will be beneficial to society; it is not a certificate of merit, but an incentive to disclosure. See Hartford Empire Co. v. United States, 323 U.S. 386, 65 S.Ct. ”