Inventor · disambiguated record
Douglas J. Herdman
Also filed as: HERDMAN DOUGLAS · HERDMAN DOUGLAS J · HERDMAN DOUGLAS JOSEPH
13 granted patents·4 pending applications·118 citations·filing 2000–2024
90Inventor score
Files withOSMOSE UTILITIES SERVICES INC11KOPPERS PERFORMANCE CHEMICALS INC2S T N HOLDINGS INC2OSMOSE HOLDINGS INC1ZHANG JUN1
Top patents by PatentIndex Score
17 records- 0194US9303169B2Controlled release, wood preserving composition with low-volatile organic content for treatment in-service utility poles, posts, pilings, cross-ties and other wooden structuresOSMOSE UTILITIES SERVICES INC·Filed 2014·Granted Apr 5, 2016·7 cites·17 claims
- 0293US9464196B2Controlled release, wood preserving composition with low-volatile organic content for treating in-service utility poles, posts, pilings, cross-ties and other wooden structuresOSMOSE UTILITIES SERVICES INC·Filed 2016·Granted Oct 11, 2016·3 cites·20 claims
- 0392US6517748B2Phosphate free fire retardant compositionS T N HOLDINGS INC·Filed 2001·Granted Feb 11, 2003·59 cites·11 claims
- 0486US9593245B2Controlled release, wood preserving composition with low-volatile organic content for treating in-service utility poles, posts, pilings, cross-ties and other wooden structuresOSMOSE UTILITIES SERVICES INC·Filed 2016·Granted Mar 14, 2017·3 cites·20 claims
- 0583US6306317B1Phosphate free fire retardant compositionS T N HOLDINGS INC·Filed 2000·Granted Oct 23, 2001·31 cites·11 claims
- 0682US8221797B2Wood preserving composition for treatment of in-service poles, posts, piling, cross-ties and other wooded structuresZHANG JUN·Filed 2008·Granted Jul 17, 2012·12 cites·53 claims
- 0776US9808015B2Controlled release, wood preserving composition for treating in-service utility poles, posts, pilings, cross-ties and other wooden structuresOSMOSE UTILITIES SERVICES INC·Filed 2017·Granted Nov 7, 2017·1 cites·20 claims
- 0867US9808009B2Dazomet compositionsOSMOSE UTILITIES SERVICES INC·Filed 2016·Granted Nov 7, 2017·0 cites·20 claims
- 0965US2024360364A1Method for manufacturing an aqueous fire retardant composition, an aqueous fire retardant composition, a method for treating a wood substrate therewith, and a wood product produced therefromKOPPERS PERFORMANCE CHEMICALS INC·Filed 2024·Application pending·0 cites
- 1063US10760238B2Protective pole capOSMOSE UTILITIES SERVICES INC·Filed 2019·Granted Sep 1, 2020·1 cites·18 claims
- 1163US10227747B2Protective pole capOSMOSE UTILITIES SERVICES INC·Filed 2017·Granted Mar 12, 2019·1 cites·16 claims
- 1263US2025052736A1Methods for determining a source of wood products, wood preservative compositions, wood products, and methods of treating wood substratesKOPPERS PERFORMANCE CHEMICALS INC·Filed 2024·Application pending·0 cites
- 1361US10085453B2Controlled release, wood preserving composition with low-volatile organic content for treating in-service utility poles, posts, pilings, cross-ties and other wooden structuresOSMOSE UTILITIES SERVICES INC·Filed 2017·Granted Oct 2, 2018·0 cites·20 claims
- 1460US10194661B2Methods of making dazomet compositionsOSMOSE UTILITIES SERVICES INC·Filed 2017·Granted Feb 5, 2019·0 cites·20 claims
- 1556US2022323801A1Fire suppression deviceOSMOSE UTILITIES SERVICES INC·Filed 2022·Application pending·0 cites
- 1654US9510599B2Dazomet compositionsOSMOSE UTILITIES SERVICES INC·Filed 2013·Granted Dec 6, 2016·0 cites·28 claims
- 1742US2014076587A1Fire retardant device for protecting wooden structures from fireOSMOSE HOLDINGS INC·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →