Inventor · disambiguated record
David John Ritchie
Also filed as: RITCHIE DAVID J · RITCHIE DAVID JOHN
8 granted patents·30 citations·filing 1994–2003
82Inventor score
Top patents by PatentIndex Score
8 records- 0163US5527953AProcess for the manufacture of N-phosphonomethyliminodiacetic acidZENECA LTD·Filed 1994·Granted Jun 18, 1996·11 cites·6 claims
- 0255US6048998AOne-step process for preparing methyl 2-(halomethyl)phenylacetate from 3-isochromanoneZENECA LTD·Filed 1997·Granted Apr 11, 2000·6 cites·9 claims
- 0352US6018045AProcess for preparing 4,6-dichloro-pyrimidineZENECA LTD·Filed 1996·Granted Jan 25, 2000·5 cites·11 claims
- 0450US6096892AChemical processZENECA LTD·Filed 1998·Granted Aug 1, 2000·5 cites·9 claims
- 0544US6015905AProcess for the preparation of 2-(6-substituted pyrid-2-yloxymethyl) phenylacetateZENECA LTD·Filed 1996·Granted Jan 18, 2000·3 cites·8 claims
- 0634US7491834B2Chemical processSYNGENTA CROP PROT INC·Filed 2003·Granted Feb 17, 2009·0 cites·13 claims
- 0734US6888008B2Process for preparing 3-isochromanoneSYNGENTA LTD·Filed 2001·Granted May 3, 2005·0 cites·10 claims
- 0825US6207840B1Process for preparing 3-isochromanoneZENECA LTD·Filed 1998·Granted Mar 27, 2001·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →