Inventor · disambiguated record
Joseph J. Chang
Also filed as: CHANG JOSEPH · CHANG JOSEPH H · CHANG JOSEPH J · CHANG JOSEPH JAWSHIN
36 granted patents·2 pending applications·3,656 citations·filing 1977–2013
98Inventor score
Files withCRITIKON INC7JOHNSON & JOHNSON MEDICAL7ETHICON INC6ADVANCED SCIENT CORP3WESTERN ELECTRIC CO2
Top patents by PatentIndex Score
38 records- 0197US5419766ACatheter with stick protectionCRITIKON INC·Filed 1993·Granted May 30, 1995·1.5k cites·22 claims
- 0292US6517520B2Peripherally inserted catheter with flushable guide-tubeETHICON ENDO SURGERY INC·Filed 2000·Granted Feb 11, 2003·202 cites·15 claims
- 0385US4303715APrinted wiring boardWESTERN ELECTRIC CO·Filed 1979·Granted Dec 1, 1981·41 cites·5 claims
- 0483US6524277B1Method and apparatus for an intravascular device showing flashbackETHICON INC·Filed 2000·Granted Feb 25, 2003·103 cites·6 claims
- 0582US6558355B1Flushable guidewire deviceETHICON INC·Filed 2000·Granted May 6, 2003·95 cites·11 claims
- 0682US5000740ACatheter with needle guardCRITIKON INC·Filed 1989·Granted Mar 19, 1991·200 cites·13 claims
- 0780US7566323B2Safety intravenous catheterSMITHS MEDICAL ASD INC·Filed 2001·Granted Jul 28, 2009·74 cites·21 claims
- 0880US6322537B1Safety intravenous catheterETHICON INC·Filed 1999·Granted Nov 27, 2001·169 cites·3 claims
- 0979US4917671AFlash plug for I.V. cathetersCRITIKON INC·Filed 1988·Granted Apr 17, 1990·162 cites·11 claims
- 1077US5688249ATelescoping members for catheter introducer assemblyJOHNSON & JOHNSON MEDICAL·Filed 1995·Granted Nov 18, 1997·179 cites·20 claims
- 1174US5092845ACatheter with needle gasketCRITIKON INC·Filed 1989·Granted Mar 3, 1992·128 cites·8 claims
- 1271US7189217B2Skin puncture device with needle stick protectionCHANG JOSEPH JAWSHIN·Filed 2006·Granted Mar 13, 2007·15 cites·14 claims
- 1371US5830189ACatheter hub to nose engagementJOHNSON & JOHNSON MEDICAL·Filed 1995·Granted Nov 3, 1998·128 cites·13 claims
- 1471US5685860ASelf-capping needle assemblyJOHNSON & JOHNSON MEDICAL·Filed 1995·Granted Nov 11, 1997·131 cites·15 claims
- 1562US5683365ATip protection deviceJOHNSON & JOHNSON MEDICAL·Filed 1995·Granted Nov 4, 1997·97 cites·15 claims
- 1661US5569202ACatheter needle tip protectorJOHNSON & JOHNSON MEDICAL·Filed 1995·Granted Oct 29, 1996·98 cites·5 claims
- 1758US5843356ACatheter tip mold and cut processJOHNSON & JOHNSON MEDICAL·Filed 1996·Granted Dec 1, 1998·20 cites·7 claims
- 1852US5126090AMethod of forming a catheter with backflow restrictionCRITIKON INC·Filed 1990·Granted Jun 30, 1992·70 cites·5 claims
- 1952US2007119381A1Fish tank with integrated gravity assisted cleaning apparatusCHANG JOSEPH H·Filed 2005·Application pending·0 cites
- 2051US7704728B2Microfluidic gravity pump with constant flow rateUNIV MICHIGAN·Filed 2002·Granted Apr 27, 2010·3 cites·21 claims
- 2150US6676636B2Solid blunt for a needle assemblyMEDEX INC·Filed 2002·Granted Jan 13, 2004·2 cites·9 claims
- 2250US6280424B1Apparatus and method for using a needle in an intravascular assemblyETHICON INC·Filed 1999·Granted Aug 28, 2001·61 cites·11 claims
- 2349US6012213AMethod for forming a rib on a cannula for a tip protection deviceFiled 1995·Granted Jan 11, 2000·59 cites·6 claims
- 2445US4107837AMethod of fabricating a printed circuit boardWESTERN ELECTRIC CO·Filed 1977·Granted Aug 22, 1978·8 cites·7 claims
- 2541US5743519AU-turn high capacity sheet feeder for fax machine or printersFiled 1995·Granted Apr 28, 1998·10 cites·6 claims
- 2640US9250450B2Article support device for applying to skinCHANG JOSEPH·Filed 2013·Granted Feb 2, 2016·0 cites·15 claims
- 2740US5822409AIncoming message automatic reporting system for fax machinesADVANCED SCIENT CORP·Filed 1996·Granted Oct 13, 1998·10 cites·4 claims
- 2839US5736085ACatheter beveling and die cut processJOHNSON & JOHNSON MEDICAL·Filed 1996·Granted Apr 7, 1998·28 cites·10 claims
- 2937US6391007B2Solid blunt for a needle assemblyFiled 1998·Granted May 21, 2002·21 cites·2 claims
- 3037US5505442AElectronically distributing and confidential paper receiverFiled 1994·Granted Apr 9, 1996·7 cites·6 claims
- 3137US4735614ACatheter for intravascular useCRITIKON LTD·Filed 1986·Granted Apr 5, 1988·40 cites·22 claims
- 3233US4499901ARetreated sensing electrodeCRITIKON INC·Filed 1983·Granted Feb 19, 1985·6 cites·15 claims
- 3330US6210379B1Needle assembly having an elongated blunting device which allows for venting of airETHICON INC·Filed 1999·Granted Apr 3, 2001·9 cites·23 claims
- 3430US5261653AHigh capacity sheet feederADVANCED SCIENT CORP·Filed 1992·Granted Nov 16, 1993·2 cites·4 claims
- 3530US5078687ACatheter with backflow restrictionCRITIKON INC·Filed 1990·Granted Jan 7, 1992·12 cites·7 claims
- 3630US2002147427A1Safety catheter with tortuous fluid pathFiled 1999·Application pending·0 cites
- 3727US6235005B1Positive engagement-disengagement catheter sleeveETHICON INC·Filed 1998·Granted May 22, 2001·10 cites·10 claims
- 3823US5523821AMobile copy machine extension unitADVANCED SCIENT CORP·Filed 1994·Granted Jun 4, 1996·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →