Inventor
FREEMAN ERIC N
US11 patents
⚠️ This page may combine multiple inventors who share the name “FREEMAN ERIC N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDW DELAWARE INC
6 patentsUS7546847B2Jun 16, 2009
Locking plug for closing the sidewall of a pipe
TDW DELAWARE INC25 citations89
US5531250AJul 2, 1996
Device for plugging the interior of a pipe
TDW DELAWARE INC29 citations89
US8052801B2Nov 8, 2011
Pipeline pig launch pin and retraction system
TDW DELAWARE INC10 citations81
US7475591B2Jan 13, 2009
Methods and systems for hydrostatic testing a pipeline
TDW DELAWARE INC13 citations77
US7311114B2Dec 25, 2007
Cross-line plugging system
TDW DELAWARE INC8 citations71
US8378667B2Feb 19, 2013
System and method for detecting the passage of an object in pipeline including shielded magnetometer and a microcontroller with adaptive thresholding detection means
TDW DELAWARE INC4 citations56