[johngd]

The author may have, mistakenly, attributed a quote as fact from one of the interviewees.

Interestingly enough, from the same link, Dupont appears to have invented/optimized a moisture-proof cellulose, which may have been what the author was referring to?

[unreal37]

It's probably fair to say Dupont introduced it into widespread use in the United States given that they were the first to manufacture it there.