Inventor · Colorado Springs, CO, US

Frederick Anthony Schaefer

3Patents
2h-index
1Co-inventors
30Inventor score

Filing activity: Jun 19, 2000 → Sep 24, 2004

Most-cited inventions

PatentTitleAreaCited byStatus
US7227882B2 System and method of processing electric arc furnace dust Emerging Cross-Sectional Technologies 4 Expired
US6640210B1 Customer service operation using wav files Physics 3 Expired
US7045038B1 Process for treating waste oil Chemistry; Metallurgy 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.