New Patent Assignments in New Castle County, DE was 5.00000 Patents in February of 2023, according to the United States Federal Reserve. Historically, New Patent Assignments in New Castle County, DE reached a record high of 258.00000 in May of 2007 and a record low of 5.00000 in February of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for New Patent Assignments in New Castle County, DE - last updated from the United States Federal Reserve on May of 2024.