Inventor
ROTH CARY A
US8 patents
⚠️ This page may combine multiple inventors who share the name “ROTH CARY A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SMITH INTERNATIONAL
6 patentsUS4944774AJul 31, 1990
Hard facing for milled tooth rock bits
SMITH INTERNATIONAL60 citations94
US4836307AJun 6, 1989
Hard facing for milled tooth rock bits
SMITH INTERNATIONAL99 citations94
US8955734B2Feb 17, 2015
Ball hole welding using the friction stir welding (FSW) process
SMITH INTERNATIONAL12 citations84
US4632401ADec 30, 1986
Hermetically welded belleville seal for rock bits
SMITH INTERNATIONAL8 citations71
US4560175ADec 24, 1985
Hermetically welded belleville seal for rocks bits
SMITH INTERNATIONAL12 citations71
US10760345B2Sep 1, 2020
Cutting elements with wear resistant surfaces
SMITH INTERNATIONAL0 citations37