Inventor · disambiguated record
D. Franklin Howeth
Also filed as: HOWETH D FRANKLIN
22 granted patents·773 citations·filing 1981–1994
97Inventor score
Files withHOWETH DAVID FRANKLIN21
Top patents by PatentIndex Score
22 records- 0193US4661131ABackflushed air filtersHOWETH DAVID FRANKLIN·Filed 1985·Granted Apr 28, 1987·94 cites·22 claims
- 0293US4434861ADust conveying and collecting system and methodHOWETH DAVID FRANKLIN·Filed 1981·Granted Mar 6, 1984·89 cites·54 claims
- 0391US4482367ASelf-cleaning air filter systemHOWETH DAVID FRANKLIN·Filed 1982·Granted Nov 13, 1984·70 cites·20 claims
- 0486US4961762AStructurally reinforced, self-aligning panel filter apparatus with associated clamping, face sealing and backflushing structureHOWETH DAVID FRANKLIN·Filed 1988·Granted Oct 9, 1990·58 cites·36 claims
- 0586US4749192AFluid coupling construction for non-pressure balanced fluid conducting swivel jointsHOWETH DAVID FRANKLIN·Filed 1987·Granted Jun 7, 1988·60 cites·19 claims
- 0681US4681609ATop loading and inverted backflushed air filter systemsHOWETH DAVID FRANKLIN·Filed 1984·Granted Jul 21, 1987·39 cites·32 claims
- 0780US4823731AMultiple filter/cyclone air filtration apparatus with single, movable filter cleaning systemHOWETH DAVID FRANKLIN·Filed 1987·Granted Apr 25, 1989·45 cites·26 claims
- 0876US5607189ARotary joint for pressurized fluidsFiled 1994·Granted Mar 4, 1997·35 cites·23 claims
- 0972US4544389AMultiple jet backflushed air filterHOWETH DAVID FRANKLIN·Filed 1983·Granted Oct 1, 1985·28 cites·17 claims
- 1069US4775398AStructurally improved filter housing and mounting apparatusHOWETH DAVID FRANKLIN·Filed 1987·Granted Oct 4, 1988·30 cites·25 claims
- 1168US4521232AAir filter unit with multiple filter chambers and particulate material collection hoppersHOWETH DAVID FRANKLIN·Filed 1983·Granted Jun 4, 1985·24 cites·11 claims
- 1266US4690700ABackflushed air filters with quick opening multiple discharge valveHOWETH DAVID FRANKLIN·Filed 1985·Granted Sep 1, 1987·27 cites·34 claims
- 1366US4637825AFilter system for power sweeperHOWETH DAVID FRANKLIN·Filed 1984·Granted Jan 20, 1987·22 cites·10 claims
- 1465US4708723ARotary broom sweeper hopperHOWETH DAVID FRANKLIN·Filed 1986·Granted Nov 24, 1987·27 cites·11 claims
- 1560US4802983AHopper loading directly insertable horizontally mounted cylindrical segmented bore pleated filter system for rotary broom sweepersHOWETH DAVID FRANKLIN·Filed 1988·Granted Feb 7, 1989·21 cites·6 claims
- 1660US4690166APressure dependent dust control filter compressed air reversed flushing control systemHOWETH DAVID FRANKLIN·Filed 1985·Granted Sep 1, 1987·21 cites·12 claims
- 1759US4756727AHorizontally mounted cylindrical segmented bore pleated filter system for rotary broom sweepersHOWETH DAVID FRANKLIN·Filed 1985·Granted Jul 12, 1988·20 cites·15 claims
- 1858US4740221AAir filter apparatus with modularized self-cleaning filter systemHOWETH DAVID FRANKLIN·Filed 1986·Granted Apr 26, 1988·19 cites·46 claims
- 1957US4650504AHopper loading directly insertable horizontally mounted cylindrical segmented bore pleated filter system for rotary broom sweepersHOWETH DAVID FRANKLIN·Filed 1985·Granted Mar 17, 1987·18 cites·25 claims
- 2050US4444280ADrill cuttings conveying apparatus with flexible duct for improved ground clearanceHOWETH DAVID FRANKLIN·Filed 1981·Granted Apr 24, 1984·12 cites·10 claims
- 2147US4440243ADrill cuttings conveying head with wet cuttings diverterHOWETH DAVID FRANKLIN·Filed 1981·Granted Apr 3, 1984·10 cites·11 claims
- 2235US4679604AShear blade cutting device with adjusting blade alignment compensatorHOWETH DAVID FRANKLIN·Filed 1986·Granted Jul 14, 1987·4 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →