Inventor · disambiguated record
Duane D. Logsdon
Also filed as: LOGSDON DUANE · LOGSDON DUANE D
31 granted patents·1,232 citations·filing 1974–1993
98Inventor score
Top patents by PatentIndex Score
31 records- 0196US4442994APipe hanger capable of totally encircling a pipeLOGSDON DUANE D·Filed 1982·Granted Apr 17, 1984·106 cites·7 claims
- 0294US4564249AMiniature washing machine boxLOGSDON DUANE D·Filed 1984·Granted Jan 14, 1986·66 cites·1 claims
- 0394US4265058ARoof flashing structuresLOGSDON FOUNDATION·Filed 1979·Granted May 5, 1981·68 cites·9 claims
- 0493US4768741APipe hangersLOGSDON DUANE D·Filed 1987·Granted Sep 6, 1988·77 cites·6 claims
- 0592US4350372AExpansion coupling for large diameter plastic pipesLOGSDON DUANE D·Filed 1980·Granted Sep 21, 1982·78 cites·5 claims
- 0691US4611626AFluid control valveLOGSDON DUANE D·Filed 1984·Granted Sep 16, 1986·54 cites·1 claims
- 0790US4010578ARoof flashing structureLOGSDON DUANE D·Filed 1974·Granted Mar 8, 1977·56 cites·2 claims
- 0889US4158471AWashing machine outlet boxLOGSDON FOUNDATION·Filed 1978·Granted Jun 19, 1979·46 cites·13 claims
- 0988US4088149ACheck valve structure for use in drainsLOGSDON DUANE D·Filed 1976·Granted May 9, 1978·43 cites·1 claims
- 1087US4212486AWater closet protector stabilizerLOGSDON FOUNDATION·Filed 1978·Granted Jul 15, 1980·47 cites·10 claims
- 1183US4742585ATub boxLOGSDON DUANE D·Filed 1987·Granted May 10, 1988·51 cites·5 claims
- 1283USD257057SPipe test capLOGSDON DUANE D·Filed 1977·Granted Sep 23, 1980·16 cites·1 claims
- 1381US4487690ASump or flush installable roof drainLOGSDON DUANE D·Filed 1983·Granted Dec 11, 1984·54 cites·6 claims
- 1479US4925045ATub boxesLOGSDON FOUNDATION·Filed 1989·Granted May 15, 1990·35 cites·6 claims
- 1579US4525273ADrain grate with adjustable weirsLOGSDON DUANE D·Filed 1983·Granted Jun 25, 1985·48 cites·3 claims
- 1678US4160347ARoof flashing structureLOGSDON FOUNDATION·Filed 1978·Granted Jul 10, 1979·40 cites·7 claims
- 1773USD270935SExpansion coupling for plastic pipeLOGSDON DUANE D·Filed 1981·Granted Oct 11, 1983·12 cites·1 claims
- 1872US4930733APipe holdersLOGSDON FOUNDATION·Filed 1989·Granted Jun 5, 1990·30 cites·7 claims
- 1970US4865072AWashing machine connection boxesLOGSDON DUANE·Filed 1988·Granted Sep 12, 1989·27 cites·5 claims
- 2070US4768560APipe plugsLOGSDON DUANE D·Filed 1987·Granted Sep 6, 1988·33 cites·5 claims
- 2169US5072461AMovable fitting members for use with drain fittingsLOGSDON FOUNDATION·Filed 1990·Granted Dec 17, 1991·36 cites·9 claims
- 2264US5072911ABarrier mold for forming openings in concrete structuresLOGSDON FOUNDATION·Filed 1990·Granted Dec 17, 1991·27 cites·6 claims
- 2364US4400272ADrain grate with adjustable weirsLOGSDON DUANE D·Filed 1981·Granted Aug 23, 1983·31 cites·2 claims
- 2462US4903921APipe holdersLOGSDON FOUNDATION·Filed 1988·Granted Feb 27, 1990·22 cites·12 claims
- 2559US5378356ARoof drain structureLSP SPECIALTY PRODUCTS COMPANY·Filed 1993·Granted Jan 3, 1995·35 cites·25 claims
- 2658US4961848ADrain grate with primary and secondary weirsLOGSDON FOUNDATION·Filed 1989·Granted Oct 9, 1990·26 cites·5 claims
- 2755US4484424ARoof ventLOGSDON DUANE D·Filed 1982·Granted Nov 27, 1984·25 cites·10 claims
- 2850US4400920AApparatus for securing pipeLOGSDON DUANE D·Filed 1981·Granted Aug 30, 1983·16 cites·11 claims
- 2948US4215724ABackflow preventer for sewer systemLOGSDON FOUNDATION·Filed 1978·Granted Aug 5, 1980·10 cites·10 claims
- 3043US4280305ARoof flashings for use with solar collectorLOGSDON FOUNDATION·Filed 1979·Granted Jul 28, 1981·12 cites·10 claims
- 3136US5052726ASeal structures for flanges having bowed sealing surfacesLOGSDON FOUNDATION·Filed 1989·Granted Oct 1, 1991·5 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →