Inventor

ENGFER DOUGLAS R

US3 patents

⚠️ This page may combine multiple inventors who share the name “ENGFER DOUGLAS R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

INVIVODATA INC

1 patent

US7873589B2Jan 18, 2011

Operation and method for prediction and management of the validity of subject reported data

INVIVODATA INC31 citations90

ERESEARCHTECHNOLOGY INC

1 patent

US9881062B2Jan 30, 2018

Operation and method for prediction and management of the validity of subject reported data

ERESEARCHTECHNOLOGY INC10 citations81

SHIFFMAN SAUL

1 patent

US9129215B2Sep 8, 2015

Operation and method for prediction and management of the validity of subject reported data

SHIFFMAN SAUL10 citations78