John Warnock, who helped invent the PDF and co-founded Adobe Systems, dies at age 82John Warnock, who helped invent the PDF and co-founded Adobe Systems, has died.
Founder of Adobe and developer of PDFs dies at age 81Charles โChuckโ Geschke โ the co-founder of the major software company Adobe Inc. who helped develop Portable Document Format technology, or PDFs โ died at age 81.