Inventor · disambiguated record
Helmut L. Merten
Also filed as: MERTEN HELMUT L · MERTEN HELMUT LUDWIG
8 granted patents·215 citations·filing 1974–1987
89Inventor score
Files withMONSANTO CO8
Top patents by PatentIndex Score
8 records- 0194US4187248AMaking a nitrodiarylamine by reacting an alkali metal salt of a formamide with a nitrohaloareneMONSANTO CO·Filed 1977·Granted Feb 5, 1980·45 cites·14 claims
- 0289US4196146AMaking nitrodiarylamines from formyl derivatives of aromatic amines and nitrohaloarenes by admixing with certain aqueous salt solutionsMONSANTO CO·Filed 1978·Granted Apr 1, 1980·23 cites·3 claims
- 0388US4614817AMaking nitrodiarylaminesMONSANTO CO·Filed 1983·Granted Sep 30, 1986·25 cites·19 claims
- 0488US4237147AStabilized amorphous calcium carbonateMONSANTO CO·Filed 1974·Granted Dec 2, 1980·64 cites·8 claims
- 0586US4900868AProcess for producing N,N'-disubstituted paraphenylene diamine mixtures by sequential reductive alkylationMONSANTO CO·Filed 1987·Granted Feb 13, 1990·38 cites·10 claims
- 0658US4297269AN,N'-Bis(1-cyclohexyl-1-ethyl)-p-phenylenediamine, and rubber compounds containing the sameMONSANTO CO·Filed 1980·Granted Oct 27, 1981·5 cites·8 claims
- 0758US3968080AN,N'-dialkyl-p-phenylenediamine mixtureMONSANTO CO·Filed 1974·Granted Jul 6, 1976·8 cites·8 claims
- 0849US4384142AProduction of cyclohexylamineMONSANTO CO·Filed 1981·Granted May 17, 1983·7 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →