| Patent Number |
Title Of Patent |
Date Issued |
| 6746547 |
Methods and compositions for oxide production on copper |
June 8, 2004 |
| The invention features and methods and compositions for oxide production on a Copper substrate, e.g., a Copper or Copper alloy substrate, to provide for improved adhesion of Copper substrate to polymeric material, e.g., such as used in manufacture of printed circuit boards. The oxide-pro |
| 6290835 |
Treatment of waste from printed circuit board production for recovery of tin and environmentally |
September 18, 2001 |
| The present invention provides methods and compositions for use in recovery of metal from waste solutions minimally comprising tin as a dispersed insoluble oxide and iron as ferric ion. In general, the invention involves increasing the pH of the waste solution using a strong alkali to |
| 4983224 |
Cleaning compositions and methods for removing soldering flux |
January 8, 1991 |
| A method to remove solder flux residues from assembled or partially assembled electronic circuit boards employs a composition containing a nonpolar component consisting essentially of terpenes and/or terpenols, a polar component consisting essentially of a polar aprotic solvent or a |
| 4969958 |
Process and composition for forming black oxide layers |
November 13, 1990 |
| Black, brown, and red oxide layers having high adhesion and peel strength are formed on printed circuit boards by adding a suitable amphipathic anionic surfactant to standard oxidizing solutions. The oxide layers thus formed result in multilayer circuit boards having reduced tendency to |
| 4956035 |
Composition and process for promoting adhesion on metal surfaces |
September 11, 1990 |
| The adhesion of organic chemicals to metal surfaces is enhanced by treating the metal surface with a composition comprising an etching component, a quaternary ammonium cationic surfactant, and a solubilizing secondary surfactant. |
| 4427481 |
Magnetized hot melt adhesive and method of preparing same |
January 24, 1984 |
| A permanently magnetized adhesive or sealant is disclosed which preferably comprises a synthetic resin material having a permanently magnetized substance dispersed therein to give the adhesive a substantially permanent, net magnetic field both before and after application and use the |
