Inventor · disambiguated record
Donald J. Kerfeld
Also filed as: KERFELD DONALD J
22 granted patents·2 pending applications·510 citations·filing 1980–2013
96Inventor score
Top patents by PatentIndex Score
24 records- 0198US4374077AProcess for making information carrying discsMINNESOTA MINING & MFG·Filed 1980·Granted Feb 15, 1983·151 cites·14 claims
- 0295US4519065AMetallized information carrying discsMINNESOTA MINING & MFG·Filed 1982·Granted May 21, 1985·66 cites·2 claims
- 0393US4363844AMetallized information carrying discsLEWIS TERRY W·Filed 1980·Granted Dec 14, 1982·92 cites·37 claims
- 0492US7801016B2Reverse optical mastering for data storage disk replicasIMATION CORP·Filed 2009·Granted Sep 21, 2010·6 cites·8 claims
- 0589US6190838B1Process for making multiple data storage disk stampers from one masterIMATION CORP·Filed 1998·Granted Feb 20, 2001·59 cites·17 claims
- 0686US7352685B2Reverse optical mastering for data storage disk replicasIMATION CORP·Filed 2004·Granted Apr 1, 2008·10 cites·35 claims
- 0782US4304806AInformation carrying discsMINNESOTA MINING & MFG·Filed 1980·Granted Dec 8, 1981·35 cites·12 claims
- 0880US6638692B1Replicated regions on optical disksIMATION CORP·Filed 2001·Granted Oct 28, 2003·19 cites·13 claims
- 0979US7600992B2Reverse optical mastering for data storage disk stamperIMATION CORP·Filed 2004·Granted Oct 13, 2009·6 cites·16 claims
- 1077US6365329B2Process for making multiple data storage disk stampers from one masterIMATION CORP·Filed 2000·Granted Apr 2, 2002·11 cites·25 claims
- 1165US6616867B2Multi-generation stampersIMATION CORP·Filed 2001·Granted Sep 9, 2003·19 cites·25 claims
- 1263US8705334B2Replica disk for data storageLEGGER COL A B LLC·Filed 2013·Granted Apr 22, 2014·0 cites·20 claims
- 1363US6354827B1Stamper assembly for manufacturing optical data storage disksIMATION CORP·Filed 1998·Granted Mar 12, 2002·22 cites·10 claims
- 1462US8593931B2Replica disk for data storageLEGGER COL A B LLC·Filed 2012·Granted Nov 26, 2013·0 cites·14 claims
- 1561US6977052B1Check disk for optical data storage disk manufacturingIMATION CORP·Filed 2002·Granted Dec 20, 2005·5 cites·21 claims
- 1660US7114947B2Optical disk mold tooling for reduced edge wedgeIMATION CORP·Filed 2004·Granted Oct 3, 2006·3 cites·10 claims
- 1760US6752611B2Optical disk mold tooling for reduced edge wedgeIMATION CORP·Filed 2001·Granted Jun 22, 2004·3 cites·7 claims
- 1858US8363534B2Reverse optical mastering for data storage disk replicasLEGGER COL A B LLC·Filed 2011·Granted Jan 29, 2013·0 cites·14 claims
- 1958US7952986B2Reverse optical mastering for data storage disk replicasIMATION CORP·Filed 2010·Granted May 31, 2011·0 cites·20 claims
- 2054USRE44633EReverse optical mastering for data storage disk replicasEDWARDS JATHAN D·Filed 2011·Granted Dec 10, 2013·0 cites·20 claims
- 2154US6821460B2Two-sided replication of data storage mediaIMATION CORP·Filed 2001·Granted Nov 23, 2004·3 cites·26 claims
- 2241US6961950B2Variable thickness stamper for creation of flat molded substratesIMATION CORP·Filed 2001·Granted Nov 1, 2005·0 cites·7 claims
- 2337US2006198290A1Cover layer structure for optical data storage mediaBROVOLD BARRY E·Filed 2005·Application pending·0 cites
- 2428US2002068198A1Data storage mediaFiled 2000·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →