The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2015
Filed:
Jan. 03, 2012
Iris Barz, Berlin, DE;
Arnd Kilian, Berlin, DE;
Markus Muskulus, Berlin, DE;
Britta Schafsteller, Berlin, DE;
Iris Barz, Berlin, DE;
Arnd Kilian, Berlin, DE;
Markus Muskulus, Berlin, DE;
Britta Schafsteller, Berlin, DE;
Atotech Deutschland GmbH, Berlin, DE;
Abstract
The invention concerns an immersion tin plating bath which comprises at least one aromatic sulfonic acid, at least one first precipitation additive and at least one second precipitation additive. The at least one first precipitation additive is an aliphatic poly-alcohol compound, an ether thereof or a polymer derived thereof having an average molecular weight in the range of 62 g/mol and 600 g/mol. The at least one second precipitation additive is a polyalkylene glycol compound having an average molecular weight in the range of 750 to 10,000 g/mol.