Inventor · disambiguated record
Hubbard H. Donald
Also filed as: DONALD HUBBARD H
8 granted patents·1 pending application·119 citations·filing 1999–2005
87Inventor score
Files withDONALD HUBBARD H4
Top patents by PatentIndex Score
9 records- 0188US6406619B1Three stage sewage treatment plantFiled 2000·Granted Jun 18, 2002·39 cites·27 claims
- 0281US6200472B1Three stage sewage treatment systemFiled 1999·Granted Mar 13, 2001·40 cites·19 claims
- 0361US6982033B2Aerobic treatment plant with filter pipeDONALD HUBBARD H·Filed 2002·Granted Jan 3, 2006·8 cites·24 claims
- 0455US6827850B2Diffusion bar aerobic treatment plantFiled 2002·Granted Dec 7, 2004·3 cites·21 claims
- 0550US6228258B1Sewage treatment system with chlorinatorFiled 1999·Granted May 8, 2001·16 cites·19 claims
- 0646USD510757STrio sewage treatment plantDONALD HUBBARD H·Filed 2004·Granted Oct 18, 2005·6 cites·1 claims
- 0743US2005126993A1Aerator alarm unitFiled 2004·Application pending·0 cites
- 0838USD539383STrio sewage treatment plantDONALD HUBBARD H·Filed 2005·Granted Mar 27, 2007·4 cites·1 claims
- 0936USD539382SDuo sewage treatment plantDONALD HUBBARD H·Filed 2005·Granted Mar 27, 2007·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →