Gray patent

Thus the Gray patent (6) covered the discovery that a minute amount of indium, when incorporated with silver, gave protection against tarnish. The inventor attempted a claim reading ... 

This comprises original publications in scientific journals or serials proceedings, in which the latest information and data are published for the first time. Primary literature includes dissertations and theses, journals, patents, conference proceedings, research reports, and preprints the latter three are often called gray literature). 

Squires, C. H. Childs, J. D., and Gray, K. A., Rhodococcus flavin reductase complementing DszA and DszC activity. Patent No. W09817787. 1998, April 30. 

Lok C.M., Bailey S., and Gray G. 2003. Method for the production of cobalt catalysts supported on silicon dioxide and their use. U.S. Patent 6534436B2. 

Patched, G.G., Gray, R.A., Reed, A., Hyzak, D.L. (1983) Thiocarbamate sulfoxides protected against dry soil deactivation. U.S. Patent 4,389,237. 

Two German patents by Muller describe preparative methods which avoid the use of hydrazoic acid by heating sodium azide with ammonium chloride or sulfate in aqueous solution. A recent Japanese patent describes a reaction between sodium azide and ammonium carbamate in liquid ammonia to give ammonium azide. Evans, Yoffe, and Gray have suggested the reaction of sodium azide with ammonium chloride in iV,iV-dimethylformamide. A modification of the last method has been made it involves the reaction of sodium azide and ammonium sulfate in dimethyl-formamide to give anhydrous ammonium azide of high purity. 

Figure 2 Frequency of the Phrase Solid-Phase Peptide Synthesis Appearing in Chemical Abstracts. Light Gray Bars Correspond to Articles in Scientific Journals and Dark Gray Bars Correspond to Patents...

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