Inventor · disambiguated record
Frederick A. Hekman
Also filed as: HEKMAN FREDERICK A · HEKMAN FREDERICK ALLEN
8 granted patents·4 pending applications·493 citations·filing 1987–2015
90Inventor score
Top patents by PatentIndex Score
12 records- 0193US6735812B2Dual mode carpet cleaning apparatus utilizing an extraction device and a soil transfer cleaning mediumTENNANT CO·Filed 2003·Granted May 18, 2004·211 cites·35 claims
- 0293US4768694AConnecting rod fracture machineGEN MOTORS CORP·Filed 1987·Granted Sep 6, 1988·63 cites·7 claims
- 0392US7967914B2Method and apparatus for cleaning fabrics, floor coverings, and bare floor surfaces utilizing a soil transfer mediumTENNANT CO·Filed 2009·Granted Jun 28, 2011·36 cites·18 claims
- 0492US4860419ASplit bearing assemblies, method for makingGEN MOTORS CORP·Filed 1988·Granted Aug 29, 1989·82 cites·8 claims
- 0579US7272870B2Secondary introduction of fluid into vacuum systemTENNANT CO·Filed 2004·Granted Sep 25, 2007·26 cites·36 claims
- 0677US5181843AInternally constrained vane compressorAUTOCAM CORP·Filed 1992·Granted Jan 26, 1993·37 cites·63 claims
- 0766US5169298AConstrained vane compressor with oil skiveAUTOCAM CORP·Filed 1991·Granted Dec 8, 1992·25 cites·26 claims
- 0850US2009120460A1Soft floor pre-spray unit utilizing electrochemically-activated water and method of cleaning soft floorsTENNANT CO·Filed 2008·Application pending·0 cites
- 0946US5452997ARotary device with thermally compensated sealAUTOCAM CORP·Filed 1994·Granted Sep 26, 1995·13 cites·23 claims
- 1043US2014013540A1Cleaning apparatusTENNANT CO·Filed 2013·Application pending·0 cites
- 1143US2004172769A1Method and apparatus for cleaning fabrics, floor coverings, and bare floor surfaces utilizing a soil transfer cleaning mediumFiled 2003·Application pending·0 cites
- 1234US2015196182A1Water Recycling System for Mobile Surface CleanersTENNANT CO·Filed 2015·Application pending·0 cites
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