You would have to read all the way to the end:<p>&quot;Today, Pyrex is manufactured by World Kitchen, which licensed the brand from Corning beginning in 1998, thus giving future generations the chance to grow up with Pyrex, too.&quot;<p>This omits that current &quot;Pyrex&quot; is, as you say, not borosilicate.<p>According to wiki:<p>&quot;World Kitchen justified this change by stating that [tempered] soda-lime glass was cheaper to produce, is the most common form of glass used in bakeware in the US, and that it also had higher mechanical strength than borosilicate—making it more resistant to breakage when dropped, which it believed to be the most common cause of breakage in glass bakeware.&quot;