Inventor · disambiguated record
Elmer S. Welch
Also filed as: WELCH ELMER S · WELCH ELMER SCOTT
12 granted patents·1 pending application·281 citations·filing 1980–2007
92Inventor score
Top patents by PatentIndex Score
13 records- 0193US5392797ASingle motive pump, clean-in-place system, for use with piping systems and with vesselsVQ CORP·Filed 1994·Granted Feb 28, 1995·106 cites·6 claims
- 0271US6669455B2Fluid-pumping system employing air-driven pump and employing at least one pulsation dampenerFiled 2002·Granted Dec 30, 2003·12 cites·12 claims
- 0368US7500491B2Sanitary fluid pressure control valveV Q CORP·Filed 2007·Granted Mar 10, 2009·8 cites·4 claims
- 0465US5603826AReturn pump system for use with clean-in-place system for use with vesselsV Q CORP·Filed 1996·Granted Feb 18, 1997·22 cites·8 claims
- 0564US4979441APulsation dampenerWELCH ELMER S·Filed 1989·Granted Dec 25, 1990·37 cites·9 claims
- 0662US5096396ARotary apparatus having passageways to clean seal chambersV Q CORP·Filed 1991·Granted Mar 17, 1992·21 cites·14 claims
- 0762US4339111AClean in place diaphragm valveSUPERIOR STAINLESS INC·Filed 1980·Granted Jul 13, 1982·23 cites·10 claims
- 0860US5398733AReadily cleaned liquid transfer systemVQ CORP·Filed 1994·Granted Mar 21, 1995·20 cites·13 claims
- 0959US6837693B2Fluid-pumping system employing piston-driven pump and employing at least one pulsation dampenerASHEAR LTD·Filed 2003·Granted Jan 4, 2005·12 cites·12 claims
- 1040US2007241555A1Field replaceable sanitary hose end couplingWELCH ELMER SCOTT·Filed 2007·Application pending·0 cites
- 1137US5070897AFlow controllerV Q CORP·Filed 1991·Granted Dec 10, 1991·7 cites·8 claims
- 1233US5807427AGas/liquid separator with controllable variable liquid levelSANI MATIC A DIVISION OF DEC I·Filed 1995·Granted Sep 15, 1998·9 cites·6 claims
- 1331US4311164AValve handle retention systemSUPERIOR STAINLESS INC·Filed 1980·Granted Jan 19, 1982·4 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →