Inventor · disambiguated record
Richard J. Zdrahala
Also filed as: CRITCHFIELD FRANK E · ZDRAHALA RICHARD · ZDRAHALA RICHARD J
39 granted patents·3 pending applications·6,808 citations·filing 1977–2007
99Inventor score
Files withMEADOX MEDICALS INC14BECTON DICKINSON CO9SCIMED LIFE SYSTEMS INC5ADVANCED BIO SURFACES INC3BOSTON SCIENT SCIMED INC2
Top patents by PatentIndex Score
42 records- 0199US4647643ASoft non-blocking polyurethanesBECTON DICKINSON CO·Filed 1985·Granted Mar 3, 1987·235 cites·23 claims
- 0298US6443988B2Mold apparatus and kit for in situ tissue repairDISC DYNAMICS INC·Filed 1998·Granted Sep 3, 2002·884 cites·38 claims
- 0398US6306177B1Biomaterial system for in situ tissue repairADVANCED BIO SURFACES INC·Filed 1997·Granted Oct 23, 2001·657 cites·24 claims
- 0498US5248305AExtruded tubing and catheters having helical liquid crystal fibrilsCORDIS CORP·Filed 1992·Granted Sep 28, 1993·196 cites·19 claims
- 0598US5156785AExtruded tubing and catheters having increased rotational stiffnessCORDIS CORP·Filed 1991·Granted Oct 20, 1992·184 cites·19 claims
- 0698US4844986AMethod for preparing lubricated surfaces and productBECTON DICKINSON CO·Filed 1988·Granted Jul 4, 1989·204 cites·20 claims
- 0797US4190711AThermoplastic polyether polyurethane elastomersUNION CARBIDE CORP·Filed 1977·Granted Feb 26, 1980·107 cites·36 claims
- 0896US6428571B1Self-sealing PTFE vascular graft and manufacturing methodsSCIMED LIFE SYSTEMS INC·Filed 2000·Granted Aug 6, 2002·186 cites·27 claims
- 0996US5665114ATubular expanded polytetrafluoroethylene implantable prosthesesMEADOX MEDICALS INC·Filed 1994·Granted Sep 9, 1997·287 cites·12 claims
- 1095US6001125APTFE vascular prosthesis and method of manufactureMEADOX MEDICALS INC·Filed 1998·Granted Dec 14, 1999·272 cites·14 claims
- 1194US6719783B2PTFE vascular graft and method of manufactureSCIMED LIFE SYSTEMS INC·Filed 2002·Granted Apr 13, 2004·119 cites·25 claims
- 1294US5877263AProcess for preparing polymer coatings grafted with polyethylene oxide chains containing covalently bonded bio-active agentsMEADOX MEDICALS INC·Filed 1996·Granted Mar 2, 1999·255 cites·41 claims
- 1394US5855618APolyurethanes grafted with polyethylene oxide chains containing covalently bonded heparinMEADOX MEDICALS INC·Filed 1996·Granted Jan 5, 1999·288 cites·8 claims
- 1493US6376742B1In vivo tissue engineering with biodegradable polymersFiled 2000·Granted Apr 23, 2002·185 cites·16 claims
- 1593US6140452ABiomaterial for in situ tissue repairADVANCED BIO SURFACES INC·Filed 1998·Granted Oct 31, 2000·549 cites·16 claims
- 1693US4885077AComposite membrane, method for its preparation and electrolyte sensor including sameBECTON DICKINSON CO·Filed 1988·Granted Dec 5, 1989·97 cites·24 claims
- 1792US6299448B1Surgical implant system for restoration and repair of body functionFiled 2000·Granted Oct 9, 2001·138 cites·32 claims
- 1891US6107416APolymer coatings grafted with polyethylene oxide chains containing covalently bonded bio-active agentsSCIMED LIFE SYSTEMS INC·Filed 1999·Granted Aug 22, 2000·170 cites·11 claims
- 1991US5800512APTFE vascular graftMEADOX MEDICALS INC·Filed 1996·Granted Sep 1, 1998·317 cites·14 claims
- 2091US4935480AFluorinated polyetherurethanes and medical devices therefromBECTON DICKINSON CO·Filed 1989·Granted Jun 19, 1990·47 cites·7 claims
- 2190US6530765B1Apparatus for manufacturing expanded polytetrafluoroethylene productsMEADOX MEDICALS INC·Filed 2000·Granted Mar 11, 2003·37 cites·8 claims
- 2290US6338904B1Polymer coatings grafted with polyethylene oxide chains containing covalently bonded bio-active agentsSCIMED LIFE SYSTEMS·Filed 2000·Granted Jan 15, 2002·57 cites·19 claims
- 2390US5607478AYarn wrapped PTFE tubular prosthesisMEADOX MEDICALS INC·Filed 1996·Granted Mar 4, 1997·190 cites·12 claims
- 2489US4743629ACrosslinked polyetherurethane membranes useful in blood electrolyte sensorsBECTON DICKINSON CO·Filed 1987·Granted May 10, 1988·38 cites·10 claims
- 2588US7244271B2Self-sealing PTFE vascular graft and manufacturing methodsBOSTON SCIENT SCIMED INC·Filed 2004·Granted Jul 17, 2007·52 cites·6 claims
- 2687US5874032AMethod for manufacturing expanded polytetrafluoroethylene productsMEADOX MEDICALS INC·Filed 1995·Granted Feb 23, 1999·54 cites·8 claims
- 2787US4816130ABlood electrolyte sensors including crosslinked polyetherurethane membranesBECTON DICKINSON CO·Filed 1987·Granted Mar 28, 1989·56 cites·10 claims
- 2886US6803069B2Method for imparting a bio-active coatingSCIMED LIFE SYSTEMS INC·Filed 2001·Granted Oct 12, 2004·46 cites·4 claims
- 2980US5556426APTFE implantable tubular prostheses with external coil supportMEADOX MEDICALS INC·Filed 1994·Granted Sep 17, 1996·169 cites·14 claims
- 3079US6306165B1ePTFE small caliber vascular grafts with significant patency enhancement via a surface coating which contains covalently bonded heparinMEADOX MEDICALS INC·Filed 1996·Granted Oct 23, 2001·100 cites·4 claims
- 3179US6036724APTFE vascular graft and method of manufactureMEADOX MEDICALS INC·Filed 1998·Granted Mar 14, 2000·129 cites·10 claims
- 3278US4720521AFilm-forming silicone compositions having lubricating propertiesBECTON DICKINSON CO·Filed 1985·Granted Jan 19, 1988·98 cites·14 claims
- 3377US5505887AExtrusion process for manufacturing PTFE productsMEADOX MEDICALS INC·Filed 1994·Granted Apr 9, 1996·85 cites·24 claims
- 3474US4806430AFilm-forming silicone compositions having lubricating propertiesBECTON DICKINSON CO·Filed 1987·Granted Feb 21, 1989·83 cites·9 claims
- 3573US5587412AEsterified starch compositionNAT STARCH CHEM INVEST·Filed 1993·Granted Dec 24, 1996·26 cites·15 claims
- 3670US5716660ATubular polytetrafluoroethylene implantable prosthesesMEADOX MEDICALS INC·Filed 1995·Granted Feb 10, 1998·67 cites·8 claims
- 3766US6080198AMethod for forming a yarn wrapped PTFE tubular prosthesisMEADOX MEDICALS INC·Filed 1997·Granted Jun 27, 2000·82 cites·7 claims
- 3862US2007244539A1Self-sealing PTFE vascular graft and manufacturing methodsBOSTON SCIENT SCIMED INC·Filed 2007·Application pending·0 cites
- 3959US4841007AFluorinated polyetherurethanes and medical devices therefromBECTON DICKINSON CO·Filed 1988·Granted Jun 20, 1989·42 cites·11 claims
- 4047US6713568B1Composition and process for preparing biocompatible polymer coatingsSCIMED LIFE SYSTEMS INC·Filed 1998·Granted Mar 30, 2004·20 cites·13 claims
- 4146US2002156531A1Biomaterial system for in situ tissue repairFiled 2002·Application pending·0 cites
- 4245US2005043808A1Knee joint prosthesisADVANCED BIO SURFACES INC·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →