...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7332621 | Process for preparing Tamsulosin The present invention relates to a process for preparing Tamsulosin, an anti-benign prostatic hyperplasia drug, which comprises converting o-ethoxyphenoxyethanol to a corresponding sulfonate, and reacting the sulfonate with (R)-(−)-5-(2-aminopropyl)-2-methoxybenze... | 02/19/2008 |