|
| US4134803 | 21 Dic 1977 | 16 Ene 1979 | R. O. Hull & Company, Inc. | Nitrogen and sulfur compositions and acid copper plating baths |
| US4877518 | 2 May 1988 | 31 Oct 1989 | Phillips Petroleum Company | Ore flotation employing dimercaptothiadiazoles |
| US4966688 | 23 Jun 1988 | 30 Oct 1990 | Phillips Petroleum Company | Ore flotation employing amino mercaptothiadiazoles |
| US5252196 | 5 Dic 1991 | 12 Oct 1993 | Shipley Company Inc. | Copper electroplating solutions and processes |
| US5730854 | 30 May 1996 | 24 Mar 1998 | Enthone-OMI, Inc. | Alkoxylated dimercaptans as copper additives and de-polarizing additives |
| US6444110 | 17 May 1999 | 3 Sep 2002 | Shipley Company, L.L.C. | Electrolytic copper plating method |