Inventor
RIGSBY DONALD R
US14 patents
⚠️ This page may combine multiple inventors who share the name “RIGSBY DONALD R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BENTELER IND INC
5 patentsUS5170557ADec 15, 1992
Method of forming a double wall, air gap exhaust duct component
BENTELER IND INC128 citations97
US5363544ANov 15, 1994
Multi-stage dual wall hydroforming
BENTELER IND INC67 citations95
US5600983AFeb 11, 1997
Controlled time-overlapped hydroforming
BENTELER IND INC40 citations92
US5582052ADec 10, 1996
Controlled time-overlapped hydroforming
BENTELER IND INC35 citations92
US4798076AJan 17, 1989
Nipple forming apparatus
BENTELER IND INC5 citations59
BENTELER AUTOMOTIVE CORP
5 patentsUS6908595B1Jun 21, 2005
Vacuum-insulated exhaust treatment devices, such as catalytic converters, with passive controls
BENTELER AUTOMOTIVE CORP25 citations91
US6884398B1Apr 26, 2005
Vacuum-insulated exhaust treatment devices with radially-extending support structures
BENTELER AUTOMOTIVE CORP26 citations91
US5715718AFeb 10, 1998
Hydroforming offset tube
BENTELER AUTOMOTIVE CORP20 citations89
US7431896B2Oct 7, 2008
Vacuum-insulated exhaust treatment devices, such as catalytic converters, with passive controls
BENTELER AUTOMOTIVE CORP8 citations72
US5775153AJul 7, 1998
Hydroforming offset tube
BENTELER AUTOMOTIVE CORP14 citations70