Inventor · disambiguated record
Richard W. Lavalley
Also filed as: LAVALLEY RICHARD W
17 granted patents·328 citations·filing 1978–1987
95Inventor score
Top patents by PatentIndex Score
17 records- 0183US4540457AButterfly valve with pressurized O-ring saleLAVALLEY IND PLASTICS INC·Filed 1983·Granted Sep 10, 1985·37 cites·12 claims
- 0283US4522716AShower pipes for rotary drum filterLAVALLEY RICHARD W·Filed 1983·Granted Jun 11, 1985·29 cites·19 claims
- 0381US4697292AShower pipes for rotary drum filterLAVALLEY IND PLASTICS INC·Filed 1985·Granted Oct 6, 1987·25 cites·33 claims
- 0473US4795558AShower pipes for rotary drum filterLAVALLEY IND PLASTICS INC·Filed 1987·Granted Jan 3, 1989·17 cites·30 claims
- 0573US4248716ATrunnion and trunnion packing sleeve insert for rotary drum filterLAVALLEY IND PLASTICS INC·Filed 1979·Granted Feb 3, 1981·26 cites·10 claims
- 0667US4419165AMethod of making a rotary drum filter and method of making an annular valve housing for such a drum filterLAVALLEY IND PLASTICS INC·Filed 1982·Granted Dec 6, 1983·23 cites·22 claims
- 0766US4383877AMethod of making an annular valve housing for a rotary drum filterLAVALLEY IND PLASTICS INC·Filed 1981·Granted May 17, 1983·23 cites·14 claims
- 0864US4370231ARotary drum filterLAVALLEY IND PLASTICS INC·Filed 1981·Granted Jan 25, 1983·21 cites·21 claims
- 0963US4680115AFiltrate discharge accelerator system for center valve filter drumsLAVALLEY IND PLASTICS INC·Filed 1985·Granted Jul 14, 1987·24 cites·13 claims
- 1059US4154687AReplaceable valve seat for center valve filter drumLAVALEY IND PLASTICS INC·Filed 1978·Granted May 15, 1979·18 cites·5 claims
- 1154US4795572AReplaceable trunnion sealLAVALLEY IND PLASTICS INC·Filed 1987·Granted Jan 3, 1989·19 cites·31 claims
- 1254US4683059AVacuum breaker valve-discharge elbow assembly for rotary drum filtersLAVALLEY IND PLASTICS INC·Filed 1985·Granted Jul 28, 1987·17 cites·30 claims
- 1350US4608171AAdjustable mounting for valve-discharge elbow of rotary drum filtersLAVALLEY IND PLASTICS INC·Filed 1985·Granted Aug 26, 1986·14 cites·15 claims
- 1448US4670099AMethod and apparatus for washing a mat of pulp stock on a drum filterLAVALLEY IND PLASTICS INC·Filed 1985·Granted Jun 2, 1987·13 cites·3 claims
- 1547US4632739AElectrolytic cell head with replaceable insert and method of protecting the sameLAVALLEY IND PLASTICS INC·Filed 1985·Granted Dec 30, 1986·6 cites·17 claims
- 1641US4608170AAngularly adjustable breaker valve-discharge elbow for rotary drum filtersLAVALLEY IND PLASTICS INC·Filed 1985·Granted Aug 26, 1986·9 cites·21 claims
- 1738US4816169AVacuum filter system and vacuum filter discharge flow assemblyLAVALLEY IND INC·Filed 1987·Granted Mar 28, 1989·7 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →