Individual holder
MORRISON DONALD R
US·33 granted patents·2 pending applications·662 citations·filing 1978–2008
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
35 records- 0194US4386901APortable vibrating concrete screedMORRISON DONALD R·Filed 1981·Granted Jun 7, 1983·60 cites·1 claims
- 0291US4650366APortable screedMORRISON DONALD R·Filed 1986·Granted Mar 17, 1987·55 cites·5 claims
- 0388US4645264AMotorized dumping vehicleMORRISON DONALD R·Filed 1985·Granted Feb 24, 1987·57 cites·2 claims
- 0488US4213749APortable vibrating concrete screedMORRISON DONALD R·Filed 1978·Granted Jul 22, 1980·36 cites·1 claims
- 0583US4461341ACooling system for hydraulic powered apparatusMORRISON DONALD R·Filed 1982·Granted Jul 24, 1984·31 cites·2 claims
- 0682US4349295AStructural ridge member for vibrating concrete screedsMORRISON DONALD R·Filed 1981·Granted Sep 14, 1982·31 cites·1 claims
- 0775US4320986AMotor powered rotary trowelMORRISON DONALD R·Filed 1980·Granted Mar 23, 1982·40 cites·7 claims
- 0867US4261694AAir vibrated/winched concrete screedMORRISON DONALD R·Filed 1980·Granted Apr 14, 1981·20 cites·11 claims
- 0966US4701071APortable screedMORRISON DONALD R·Filed 1987·Granted Oct 20, 1987·27 cites·2 claims
- 1065US4832525ADouble-bearing shaft for a vibrating screedMORRISON DONALD R·Filed 1988·Granted May 23, 1989·20 cites·4 claims
- 1164US4869618ADistributor for concrete screed, and screed assembly comprising sameMORRISON DONALD R·Filed 1988·Granted Sep 26, 1989·24 cites·20 claims
- 1264US4253778AWinch apparatus for vibrating concrete screedMORRISON DONALD R·Filed 1979·Granted Mar 3, 1981·19 cites·1 claims
- 1363US4676691ADual rotary trowelMORRISON DONALD R·Filed 1986·Granted Jun 30, 1987·28 cites·11 claims
- 1458US4556339ARotary trowel blade assemblyMORRISON DONALD R·Filed 1984·Granted Dec 3, 1985·24 cites·4 claims
- 1557US4657431ANon-uniform size particulate spreaderMORRISON DONALD R·Filed 1986·Granted Apr 14, 1987·22 cites·10 claims
- 1655US2009115192A1Water wave-based energy generatorMORRISON DONALD R·Filed 2008·Application pending·0 cites
- 1753US4607979AHydraulically-powered rock spreaderMORRISON DONALD R·Filed 1984·Granted Aug 26, 1986·17 cites·3 claims
- 1853US4397626AVibrating screed and curb-forming apparatusMORRISON DONALD R·Filed 1981·Granted Aug 9, 1983·17 cites·5 claims
- 1952US4335976AWinch apparatus for vibrating concrete screedMORRISON DONALD R·Filed 1981·Granted Jun 22, 1982·13 cites·2 claims
- 2051US2007154263A1Water wave-based energy generatorMORRISON DONALD R·Filed 2006·Application pending·0 cites
- 2149US4388017ATroweling blade rotor assemblyMORRISON DONALD R·Filed 1981·Granted Jun 14, 1983·17 cites·1 claims
- 2248US4931008AQuick disassembly screed constructionMORRISON DONALD R·Filed 1989·Granted Jun 5, 1990·16 cites·6 claims
- 2348US4806047AScreed frame and stiffening apparatusMORRISON DONALD R·Filed 1988·Granted Feb 21, 1989·14 cites·14 claims
- 2446US4859115ABlade mounting apparatus, and blade comprising sameMORRISON DONALD R·Filed 1988·Granted Aug 22, 1989·14 cites·4 claims
- 2546US4195809AScreed bar support stake and methodMORRISON DONALD R·Filed 1978·Granted Apr 1, 1980·11 cites·5 claims
- 2645US4191360AConcrete reinforcement mesh lifting toolMORRISON DONALD R·Filed 1979·Granted Mar 4, 1980·8 cites·1 claims
- 2741US4555200AHydraulically-powered material spreaderMORRISON DONALD R·Filed 1984·Granted Nov 26, 1985·10 cites·3 claims
- 2839US4848959ARetaining clip and blade mounting apparatusMORRISON DONALD R·Filed 1988·Granted Jul 18, 1989·9 cites·9 claims
- 2938USD309904SDistributor for a concrete screedMORRISON DONALD R·Filed 1988·Granted Aug 14, 1990·2 cites·1 claims
- 3038USD306963SConcrete finishing screed barMORRISON DONALD R·Filed 1987·Granted Apr 3, 1990·2 cites·1 claims
- 3137US4877104ABraking system for a motorized dumping vehicleMORRISON DONALD R·Filed 1988·Granted Oct 31, 1989·3 cites·3 claims
- 3237US4397580AVibrating screed and curb/gutter forming apparatus and methodMORRISON DONALD R·Filed 1981·Granted Aug 9, 1983·7 cites·6 claims
- 3334US4722638AScreen with frontal distribution unitMORRISON DONALD R·Filed 1987·Granted Feb 2, 1988·5 cites·5 claims
- 3431US4892438AScreed construction and methodMORRISON DONALD R·Filed 1988·Granted Jan 9, 1990·3 cites·4 claims
- 3530US4753578AAbrasive fluid pumping apparatusMORRISON DONALD R·Filed 1986·Granted Jun 28, 1988·0 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →