Inventor
ELWELL JR JOHN M
US10 patents
⚠️ This page may combine multiple inventors who share the name “ELWELL JR JOHN M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DRAPER LAB CHARLES S
7 patentsUS6630904B2Oct 7, 2003
Deeply-integrated adaptive INS/GPS navigator with extended-range code tracking
DRAPER LAB CHARLES S76 citations97
US6693592B2Feb 17, 2004
Geographical navigation using multipath wireless navigation signals
DRAPER LAB CHARLES S61 citations95
US6331835B1Dec 18, 2001
Deeply-integrated adaptive GPS-based navigator with extended-range code tracking
DRAPER LAB CHARLES S58 citations95
US6731237B2May 4, 2004
Deeply-integrated adaptive GPS-based navigator with extended-range code tracking
DRAPER LAB CHARLES S40 citations92
US7679561B2Mar 16, 2010
Systems and methods for positioning using multipath signals
DRAPER LAB CHARLES S13 citations83
US4270044AMay 26, 1981
Optical reference gyro
DRAPER LAB CHARLES S8 citations72
US7973716B2Jul 5, 2011
Systems and methods for transparency mapping using multipath signals
DRAPER LAB CHARLES S6 citations62
ELWELL JR JOHN M
3 patentsUS8466835B2Jun 18, 2013
Systems and methods for clock correction
ELWELL JR JOHN M7 citations81
US8279119B2Oct 2, 2012
Systems and methods for transparency mapping using multipath signals
ELWELL JR JOHN M14 citations80
US8563910B2Oct 22, 2013
Systems and methods for targeting a projectile payload
ELWELL JR JOHN M5 citations71