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Based in Creighton, Pennsylvania (about 20 miles north of Pittsburgh along the Allegheny River), PPG soon became the United States' first commercially successful producer of high-quality, thick flat glass using the plate process.
Leyden jars or more powerful devices employing flat glass plates alternating with foil conductors were used exclusively up until about 1900, when the invention of wireless (radio) created a demand for standard capacitors, and the steady move to higher frequencies required capacitors with lower inductance.
Later he established the first flat glass factory in Bahjoi by the name of United Provinces Glass Works, incorporated as a limited liability company in 1916.