Inventor · disambiguated record
Don Harold
Also filed as: ENGEL DONALD FRANCIS · HAROLD DECEASED DON · HAROLD DON
9 granted patents·875 citations·filing 1997–2003
93Inventor score
Technology areasB01D
Files withDONALDSON CO INC9
Top patents by PatentIndex Score
9 records- 0199US5897676AReverse flow air filter arrangement and methodDONALDSON CO INC·Filed 1998·Granted Apr 27, 1999·299 cites·19 claims
- 0298US6322602B2Reverse flow air filter arrangementDONALDSON CO INC·Filed 2001·Granted Nov 27, 2001·118 cites·10 claims
- 0397US6413289B2Reverse flow air filter arrangementDONALDSON CO INC·Filed 2001·Granted Jul 2, 2002·76 cites·20 claims
- 0496US6004366AReverse flow air filter arrangement and methodDONALDSON CO INC·Filed 1998·Granted Dec 21, 1999·95 cites·17 claims
- 0595US6521009B2Reverse flow air filter arrangement and methodDONALDSON CO INC·Filed 2001·Granted Feb 18, 2003·65 cites·38 claims
- 0694US6258145B1Reverse flow air filter arrangementDONALDSON CO INC·Filed 1999·Granted Jul 10, 2001·74 cites·17 claims
- 0794US5938804AReverse flow air filter arrangement and methodDONALDSON CO INC·Filed 1997·Granted Aug 17, 1999·117 cites·14 claims
- 0886US7455707B2Reverse flow air filter arrangement and methodDONALDSON CO INC·Filed 2003·Granted Nov 25, 2008·27 cites·67 claims
- 0941USD425977SInside surface of a filter element having insert constructionDONALDSON CO INC·Filed 1998·Granted May 30, 2000·4 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →