Inventor
KEMP WILLARD E
US43 patents
⚠️ This page may combine multiple inventors who share the name “KEMP WILLARD E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KEMP DEV CORP
15 patentsUS5170659ADec 15, 1992
Apparatus and method for detecting fluid leakage
KEMP DEV CORP136 citations98
US4911196AMar 27, 1990
Inline check valve
KEMP DEV CORP58 citations96
US4911408AMar 27, 1990
Seat assembly for ball valves
KEMP DEV CORP78 citations96
US6427711B1Aug 6, 2002
Inline check valve
KEMP DEV CORP26 citations92
US4940208AJul 10, 1990
Ball valve
KEMP DEV CORP38 citations92
US4899980AFeb 13, 1990
Ball valve
KEMP DEV CORP31 citations92
US5766544AJun 16, 1998
Process for fluidizing particulate material within a rotatable retort
KEMP DEV CORP17 citations84
US5958156ASep 28, 1999
Process for treating a particulate material within a rotating retort
KEMP DEV CORP11 citations74
US5759483AJun 2, 1998
Apparatus for treating a particulate material within a rotating retort
KEMP DEV CORP12 citations74
US5407498AApr 18, 1995
Mechanically fluidized retort and method for treating particles therein
KEMP DEV CORP8 citations74
US5378331AJan 3, 1995
Apparatus and method for electropolishing metal workpieces
KEMP DEV CORP14 citations74
US5000492AMar 19, 1991
Flanged connection for flow line members
KEMP DEV CORP9 citations74
US4919391AApr 24, 1990
flanged connection for valves
KEMP DEV CORP16 citations74
US6773521B2Aug 10, 2004
Apparatus and process for treating a particulate material within a rotating retort
KEMP DEV CORP3 citations63
US6425570B1Jul 30, 2002
Ball valve having retractable sealing member
KEMP DEV CORP6 citations63
KEMP WILLARD E
14 patentsUS4379725AApr 12, 1983
Process for hot isostatic pressing of a metal workpiece
KEMP WILLARD E19 citations82
US4249889AFeb 10, 1981
Method and apparatus for preheating, positioning and holding objects
KEMP WILLARD E22 citations82
US5324009AJun 28, 1994
Apparatus for surface hardening of refractory metal workpieces
KEMP WILLARD E16 citations74
USD292935SNov 24, 1987
Gate valve
KEMP WILLARD E6 citations74
USD292820SNov 17, 1987
Gate valve
KEMP WILLARD E16 citations74
US4588164AMay 13, 1986
Through conduit gate valve
KEMP WILLARD E15 citations74
US4530488AJul 23, 1985
Through conduit gate valve with double expanding gate assembly
KEMP WILLARD E8 citations74
US4410373AOct 18, 1983
Process for heat treatment of a metal workpiece
KEMP WILLARD E16 citations74
US4318437AMar 9, 1982
Metal casting system
KEMP WILLARD E16 citations74
USD296922SJul 26, 1988
Gate valve
KEMP WILLARD E3 citations63
USD292933SNov 24, 1987
Gate valve
KEMP WILLARD E5 citations63
USD291723SSep 1, 1987
Gate valve
KEMP WILLARD E4 citations63
USD291724SSep 1, 1987
Gate valve
KEMP WILLARD E2 citations63
USD296921SJul 26, 1988
Gate valve
KEMP WILLARD E0 citations52
FIKE CORP
6 patentsUS5435337AJul 25, 1995
Inline control valve for controlling fluid flow
FIKE CORP22 citations92
US5399207AMar 21, 1995
Process for surface hardening of refractory metal workpieces
FIKE CORP40 citations92
US5316594AMay 31, 1994
Process for surface hardening of refractory metal workpieces
FIKE CORP36 citations92
US5170989ADec 15, 1992
Sealing assembly for valve member
FIKE CORP29 citations92
US5127628AJul 7, 1992
Means for rotating ball valves between open and closed positions
FIKE CORP25 citations92
US5303904AApr 19, 1994
Method and apparatus for controlling heat transfer between a container and workpieces
FIKE CORP12 citations74
ACF IND INC
6 patentsUS4160460AJul 10, 1979
Fire-safe valve structure
ACF IND INC13 citations74
US4072126AFeb 7, 1978
Visual indicator for safety systems
ACF IND INC19 citations74
US4066240AJan 3, 1978
Self compensating seat for a spherical plug valve
ACF IND INC11 citations69
US4193577AMar 18, 1980
Expanding gate valve with axially flexed spring plate
ACF IND INC2 citations63
US4178665ADec 18, 1979
Method of making a fabricated gate valve
ACF IND INC4 citations60
US4111396ASep 5, 1978
Fabricated gate valve structure
ACF IND INC4 citations60