Inventor · Urbandale, IA, US

Derrick Witcher

3Patents
3h-index
10Co-inventors
37Inventor score

Filing activity: Nov 6, 1995 → Nov 6, 1995

Most-cited inventions

PatentTitleAreaCited byStatus
US5767379A Commercial production of avidin in plants Chemistry; Metallurgy 14 Expired
US5824870A Commercial production of aprotinin in plants Emerging Cross-Sectional Technologies 13 Expired
US5804694A Commercial production of .beta.-glucuronidase in plants Chemistry; Metallurgy 8 Expired

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