Inventor · disambiguated record
David A. Johnston
Also filed as: JOHNSTON DAVID · JOHNSTON DAVID A · JOHNSTON DAVID ANDREW
9 granted patents·5 pending applications·57 citations·filing 2000–2024
83Inventor score
Files withROCHE COLORADO CORP8ROCHE PALO ALTO LLC2THERMON CANADA INC2FUTURENERGY PTY LTD1HOFFMANN LA ROCHE1
Top patents by PatentIndex Score
14 records- 0191US6545165B1Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-pyran-2-oneROCHE COLORADO CORP·Filed 2000·Granted Apr 8, 2003·22 cites·35 claims
- 0287US7439222B2Process and systems for peptide synthesisROCHE PALO ALTO LLC·Filed 2004·Granted Oct 21, 2008·29 cites·33 claims
- 0377US6818789B2Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-pyran-2-oneROCHE COLORADO CORP·Filed 2003·Granted Nov 16, 2004·6 cites·10 claims
- 0460US2025043992A1Electric process heaterTHERMON CANADA INC·Filed 2023·Application pending·0 cites
- 0558US2025067468A1Electric process heater with higher flux heating elements in zones of perpendicular flowTHERMON CANADA INC·Filed 2024·Application pending·0 cites
- 0651US6858749B2Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-pyran-2-oneROCHE COLORADO CORP·Filed 2003·Granted Feb 22, 2005·0 cites·7 claims
- 0750US7544665B2Synthesis using peptide intermediate fragmentsROCHE COLORADO CORP·Filed 2005·Granted Jun 9, 2009·0 cites·6 claims
- 0848US6743927B2Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-pyran-2-oneROCHE COLORADO CORP·Filed 2003·Granted Jun 1, 2004·0 cites·21 claims
- 0947US7473798B2Derivatives of unsaturated, cyclic organic acidsROCHE PALO ALTO LLC·Filed 2006·Granted Jan 6, 2009·0 cites·14 claims
- 1047US2016195264A1Process utilizing synergistic mixture of fuels to produce energy and reduce emissions in boilersFUTURENERGY PTY LTD·Filed 2014·Application pending·0 cites
- 1143US2006276624A1Synthesis using peptide intermediate fragmentsROCHE COLORADO CORP·Filed 2005·Application pending·0 cites
- 1242US7288658B2Process for preparation of pyridine derivativesHOFFMANN LA ROCHE·Filed 2004·Granted Oct 30, 2007·0 cites·25 claims
- 1342US2007213504A1Synthesis using peptide intermediate fragmentsROCHE COLORADO CORP·Filed 2005·Application pending·0 cites
- 1441US7384939B2Process for preparation of pyridine derivatives of NK-1 receptor antagonistROCHE COLORADO CORP·Filed 2005·Granted Jun 10, 2008·0 cites·32 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →