There are a couple of possibilities for China (which has never counterfeited
anything, right?
) 'Pyrex' in this case (as in the case of heat-resistant glass made elsewhere)
may be a
genericized trademark (e.g. kodak, kleenex, xerox, zipper, aspirin,
et al), and just be synonymous with borosilicate or heat-resistant glass.
Shattering pyrex To Show A Massive Weakness In Trademark Law
'Australian Pyrex' isn't
PYREX® or
Pyrex®; it's
Australian Pyrex—not the same. Same for
Crown Pyrex. I don't deny there could be confusion, but I don't know enough about the (legal) histories of the trademark & various corporate interplays to comment. That said, Australian Pyrex et al were/are to my knowledge not part of the urban myth.
My point is that the urban myth regarding the Chinese owning the PYREX® or Pyrex® trademarks, PYREX® or Pyrex® being made in China and
no longer made in the U.S., and the change from
borosilicate glass to
tempered soda-lime glass being recent and/or for profit sake—has been debunked. Those claims are not factual.
Doc