Inventor · disambiguated record
John E. Waldrum
Also filed as: WALDRUM JOHN E
20 granted patents·385 citations·filing 1975–1997
96Inventor score
Top patents by PatentIndex Score
20 records- 0192US3968933AApparatus for hydraulic plantingAMCHEM PROD·Filed 1975·Granted Jul 13, 1976·59 cites·19 claims
- 0281US4051805ACan washing and coating systemAMCHEM PROD·Filed 1975·Granted Oct 4, 1977·48 cites·23 claims
- 0377US3931930AVariable spray apparatus and methodAMCHEM PROD·Filed 1975·Granted Jan 13, 1976·32 cites·27 claims
- 0467US5020725AManual spray apparatusWALDRUM JOHN E·Filed 1989·Granted Jun 4, 1991·29 cites·11 claims
- 0563US4231520ALiquid sprayerWALDRUM JOHN E·Filed 1979·Granted Nov 4, 1980·25 cites·6 claims
- 0658US5248086AThin invert compositions for spray applicationWALDRUM SPECIALTIES INC·Filed 1991·Granted Sep 28, 1993·25 cites·20 claims
- 0756US5031839AVolume controllable applicatorDOWELANCO·Filed 1989·Granted Jul 16, 1991·22 cites·20 claims
- 0855US4662565APesticide spraying deviceDOW CHEMICAL CO·Filed 1985·Granted May 5, 1987·21 cites·14 claims
- 0954US4892255ACentrifugal applicating deviceWALDRUM JOHN E·Filed 1988·Granted Jan 9, 1990·19 cites·15 claims
- 1049US5823436AMicro orifice nozzle having fan spray patternWALDRUM SPECIALTIES INC·Filed 1997·Granted Oct 20, 1998·17 cites·12 claims
- 1147US5518183AMicro-orifice nozzleWALDRUM SPECIALTIES INC·Filed 1994·Granted May 21, 1996·17 cites·15 claims
- 1246US4949937ARemote throttling valveWALDRUM JOHN E·Filed 1990·Granted Aug 21, 1990·13 cites·19 claims
- 1343US5110048ASpray nozzlesDOWELANCO·Filed 1990·Granted May 5, 1992·12 cites·19 claims
- 1442US5146944ADual pump metering dilution apparatusDOWELANCO·Filed 1991·Granted Sep 15, 1992·10 cites·18 claims
- 1540US4997129ALow cost applicator and method of useWALDRUM JOHN E·Filed 1990·Granted Mar 5, 1991·12 cites·7 claims
- 1639US4760963AGround spray applicatorWALDRUM JOHN E·Filed 1986·Granted Aug 2, 1988·10 cites·12 claims
- 1734US5106005AReusable carrier for containersDOWELANCO·Filed 1989·Granted Apr 21, 1992·3 cites·24 claims
- 1833US4844345AAspirator trayWALDRUM JOHN E·Filed 1988·Granted Jul 4, 1989·5 cites·6 claims
- 1932US4454988ASelf-cleaning nozzleUNION CARBIDE CORP·Filed 1982·Granted Jun 19, 1984·4 cites·4 claims
- 2030US4953790ALow cost applicator and method of useWALDRUM JOHN E·Filed 1988·Granted Sep 4, 1990·2 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when John E. Waldrum files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →