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Inventors — North Liberty
North Liberty invented nothing the world names — no baking powder, no arc light, no breakthrough with the town in its title. What the patent record actually holds for this address is quieter and real: a working engineer in the Honeywell line of companies who patented, application by application, the fuel-control plumbing of modern gas-turbine engines, and gave a North Liberty address on the filings. This section carries him at exactly the strength of that record, carries the town's nineteenth-century making as the pre-patent ground it is, and prints the rest as searched negatives.
Paul W. Futa Jr.: gas-turbine fuel controls, patented from a North Liberty address
Applications published 2010–2013 and the record around them
The patent-application indexes carry Paul Futa of North Liberty, Indiana, as an inventor on a run of gas-turbine fuel-system filings. The applications the index names, with their publication years: a fuel divider system for a gas turbine engine (application published February 2010); a flow-equalising override assembly for that divider system (2010); an ecology-valve fuel-return system (2010); and a gas-turbine engine fuel-return valve and system (2013) — the unglamorous, exacting control hardware that meters fuel to a jet engine across its flight phases. A profile of Futa in an inventors' directory credits him with 34 patents and a career with Honeywell International and AlliedSignal; the profile carries its own caution that its text is machine-generated and may not be accurate, so the count and the career print here as the profile's claims, not as this build's findings. What stands at record strength is the application index itself: a North Liberty resident patenting aircraft-engine controls into the 2010s. The full patent-by-patient pull — every granted patent, its number, date and claim — stands as a named gap; its settler is the USPTO and Google Patents inventor search under his name and town.
Before patents: the Cole works and the making town
1866 – into the twentieth century
The town's inventive century was a building century, not a patenting one. The Cole Brothers' planing mill (1866), burned and reincorporated in 1873 as the North Liberty Manufacturing Company, made wagons and buggies at factory scale (businesses leg) — manufacture by craft and jig rather than by patented novelty, and no patent in the record reached attaches to the firm or to Isaac R. Cole. The same holds for the town's other early making — the gristmill and sawmill on Potato Creek, the brick and broom trades of the businesses leg. No contested "first," no failed claim and no local Edison presents itself in the sources reached, and this article prints that plainly rather than dressing production up as invention.
The searched negatives: Black inventors, women inventors, the aggregate count
Tested November 2026
Three required tests return negatives or gaps, printed as returned. Black inventors: the patent indexes searched by this town's name return no Black inventor — a result consistent with the census record carried in the Black history leg (the town counted five Black residents in 2020) and printed as a searched negative, with the caveat that patent records do not state race and the test is by name and biography, not by the index alone. Women inventors: no woman inventor under a North Liberty address was found in the indexes searched — negative, same caveat. The aggregate test — the town's patent density, the count behind any rank — was not run to completion and stands as a named gap; its settler is the USPTO's geographic patent data for the 46554 area, and no density claim is printed without it. The present-day research close is likewise honest: North Liberty holds no research institution; its inventive life runs through residents employed in the region's engineering economy, of whom Futa's filings are the documented instance.