Inventor · disambiguated record
David Krafsur
Also filed as: KRAFSUR DAVID · KRAFSUR DAVID S
9 granted patents·4 pending applications·514 citations·filing 1999–2009
92Inventor score
Files withSHOE SPRING INC5LEVERT FRANCIS E3KRAFSUR DAVID S1LEVERT FRANCIS EDWARD1TECHNOLOGY FOR ENERGY CORP1
Top patents by PatentIndex Score
13 records- 0194US6282814B1Spring cushioned shoeSHOE SPRING INC·Filed 1999·Granted Sep 4, 2001·150 cites·9 claims
- 0292US6665957B2Fluid flow system for spring-cushioned shoeSHOE SPRING INC·Filed 2001·Granted Dec 23, 2003·76 cites·5 claims
- 0391US7159338B2Fluid flow system for spring-cushioned shoeLEVERT FRANCIS E·Filed 2005·Granted Jan 9, 2007·49 cites·6 claims
- 0490US6886274B2Spring cushioned shoeSHOE SPRING INC·Filed 2003·Granted May 3, 2005·85 cites·11 claims
- 0589US7219447B2Spring cushioned shoeLEVERT FRANCIS E·Filed 2005·Granted May 22, 2007·51 cites·9 claims
- 0683US6865824B2Fluid flow system for spring-cushioned shoeFiled 2003·Granted Mar 15, 2005·38 cites·3 claims
- 0780US7441347B2Shock resistant shoeLEVERT FRANCIS E·Filed 2005·Granted Oct 28, 2008·24 cites·7 claims
- 0861US8065817B2Cushioning apparatus for ambulatory useLEVERT FRANCIS EDWARD·Filed 2009·Granted Nov 29, 2011·3 cites·11 claims
- 0951US6353656B1Radioisotope based x-ray residual stress analysis apparatusTECHNOLOGY FOR ENERGY CORP·Filed 1999·Granted Mar 5, 2002·38 cites·2 claims
- 1049US2005247385A1Process for improving fatigue life in spring-cushioned shoesKRAFSUR DAVID S·Filed 2005·Application pending·0 cites
- 1148US2002174567A1Spring cushioned shoeSHOE SPRING INC·Filed 2002·Application pending·0 cites
- 1247US2003126760A1Shock resistant shoeSHOE SPRING INC·Filed 2003·Application pending·0 cites
- 1347US2001049888A1Spring cushioned shoeFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →