Inventor
SPECK DONALD R
US8 patents
⚠️ This page may combine multiple inventors who share the name “SPECK DONALD R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RALSTON PURINA CO
3 patentsUS6261081B1Jul 17, 2001
Extruder with variable restriction element
RALSTON PURINA CO23 citations91
US6025004AFeb 15, 2000
Process for mechanically controlling the bulk density of an extruded food material
RALSTON PURINA CO25 citations91
US6270820B1Aug 7, 2001
Process for dry stable intermediate pet food composition
RALSTON PURINA CO22 citations86