Ferstl; Berthold
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ferstl; Berthold.The latest application filed is for "aqueous alkaline compositions and method for treating the surface of silicon substrates".
- Ferstl; Berthold - Bensheim N/A DE
| Patent | Date |
|---|---|
| Aqueous alkaline etching and cleaning composition and method for treating the surface of silicon substrates Grant 9,076,920 - Ferstl , et al. July 7, 2 | 2015-07-07 |
| Aqueous Alkaline Compositions And Method For Treating The Surface Of Silicon Substrates App 20140134778 - Ferstl; Berthold | 2014-05-15 |
| Aqueous Alkaline Etching And Cleaning Composition And Method For Treating The Surface Of Silicon Substrates App 20130078756 - Ferstl; Berthold ; et al. | 2013-03-28 |
| Use Of Mixtures For Removing Polyurethane From Metal Surfaces App 20120142573 - Montero Pancera; Sabrina ; et al. | 2012-06-07 |
| Method For Removing Etching Residues From Semiconductor Components App 20100136794 - Ferstl; Berthold ; et al. | 2010-06-03 |
| Method For Removing Etching Residues From Semiconductor Components App 20100120256 - Ferstl; Berthold ; et al. | 2010-05-13 |
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