Inventor · disambiguated record
Ronald W. Ratcliffe
Also filed as: RATCLIFFE RONALD W · RATCLIFFE Ronald
73 granted patents·2 pending applications·741 citations·filing 1973–2005
99Inventor score
Top patents by PatentIndex Score
75 records- 0192US4383946AProcess for the preparation of 1-carbapenems and intermediates via silyl-substituted dithioacetalsMERCK & CO INC·Filed 1981·Granted May 17, 1983·27 cites·1 claims
- 0292US4273709AProcess for the preparation of thienamycin and intermediatesMERCK & CO INC·Filed 1979·Granted Jun 16, 1981·21 cites·4 claims
- 0392US4226866ANovel antibiotic analogues of cephalosporinsMERCK & CO INC·Filed 1979·Granted Oct 7, 1980·22 cites·19 claims
- 0492US4217453A6-Amido-3-substituted-amino-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1978·Granted Aug 12, 1980·25 cites·4 claims
- 0590US4174316A4-Iodomethylazetidin-2-oneMERCK & CO INC·Filed 1978·Granted Nov 13, 1979·17 cites·1 claims
- 0689US5756725ACarbapenem antibacterial compounds, compositions containing such compounds and methods of treatmentMERCK & CO INC·Filed 1997·Granted May 26, 1998·51 cites·26 claims
- 0789US4318912A6-(1-Hydroxyethyl)-3-substituted-1-azabicyclo(3.2.0)-hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1980·Granted Mar 9, 1982·20 cites·4 claims
- 0889US4309346AProcess for the preparation of 1-carbapenems and intermediates via trithioorthoacetatesMERCK & CO INC·Filed 1980·Granted Jan 5, 1982·24 cites·8 claims
- 0987US4290947AProcess for the preparation of thienamycin and intermediatesMERCK & CO INC·Filed 1980·Granted Sep 22, 1981·23 cites·1 claims
- 1087US4032521ACephalosporin phosphonic acid, sulfonic acid and sulfonamide compoundsMERCK & CO INC·Filed 1973·Granted Jun 28, 1977·16 cites·9 claims
- 1185US4226870AO-, N- and carboxyl derivatives of thienamycinMERCK & CO INC·Filed 1977·Granted Oct 7, 1980·13 cites·2 claims
- 1284US4424230A6-(1'-Hydroxyethyl)-3-substituted amino-1-azabicyclo- 3.2.0!hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1980·Granted Jan 3, 1984·16 cites·4 claims
- 1384US4258040ACephalosporin compoundsMERCK & CO INC·Filed 1978·Granted Mar 24, 1981·11 cites·9 claims
- 1483US7157604B2Selective estrogen receptor modulatorsMERCK & CO INC·Filed 2002·Granted Jan 2, 2007·20 cites·22 claims
- 1583US4729993ACarbapenems and 1-methylcarbapenems having an externally alkylated mono- or bicyclic 2-quaternary heteroarylalkyl substituentMERCK & CO INC·Filed 1984·Granted Mar 8, 1988·15 cites·21 claims
- 1682US6399597B11,8-naphthosultamylmethyl carbapenem antibacterial compounds, compositions containing such compounds and methods treatmentMERCK & CO INC·Filed 2000·Granted Jun 4, 2002·15 cites·12 claims
- 1782US6054434A8a-azalides as veterinary antimicrobal agentsMERCK & CO INC·Filed 1998·Granted Apr 25, 2000·59 cites·19 claims
- 1881US7087599B2Estrogen receptor modulatorsMERCK & CO INC·Filed 2001·Granted Aug 8, 2006·15 cites·27 claims
- 1979US4310538A3-Halo-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1980·Granted Jan 12, 1982·11 cites·2 claims
- 2079US4235922A3-(2-Aminoethylthio)-6-ethyl-7-oxo-1-azabicyclo [3.2.0]hept-2-ene-2-carboxylic acidMERCK & CO INC·Filed 1979·Granted Nov 25, 1980·13 cites·8 claims
- 2179US3962224ACephalosporin compoundsMERCK & CO INC·Filed 1973·Granted Jun 8, 1976·9 cites·4 claims
- 2278US6339063B19a-azalides as veterinary antimicrobial agentsMERCK & CO INC·Filed 1998·Granted Jan 15, 2002·53 cites·8 claims
- 2378US4675317A2-unsaturated alkylthio-pen-2-em-3-carboxylic acidsMERCK & CO INC·Filed 1983·Granted Jun 23, 1987·12 cites·5 claims
- 2478US3947413A3-α-Substituted cephalosporinsMERCK & CO INC·Filed 1973·Granted Mar 30, 1976·7 cites·2 claims
- 2576US4820817AProcess for preparing 3-substituted-6-substituted-7-oxo-1-azabicycl(3.2.0)-hept-2-ene-2-carboxylic acidMERCK & CO INC·Filed 1985·Granted Apr 11, 1989·12 cites·3 claims
- 2675US5985844AHomoerythromycin A derivatives modified at the 4"-and 8A-positionsMERCK & CO INC·Filed 1992·Granted Nov 16, 1999·40 cites·49 claims
- 2775US4530841A6- And 6,6-disubstituted-3-substituted amino-1-azabicyclo-[3.2.0]hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1982·Granted Jul 23, 1985·10 cites·4 claims
- 2874US4298741A6-Amido-3-substituted-1-azabicyclo[3.2.0]-hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1980·Granted Nov 3, 1981·10 cites·2 claims
- 2973US4745188AProcess for preparing 3-substituted-6-substituted-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acidMERCK & CO INC·Filed 1985·Granted May 17, 1988·10 cites·3 claims
- 3073US4610823AProcess for preparing substituted 2-thioxopenams and 2-substituted thiopenemsMERCK & CO INC·Filed 1983·Granted Sep 9, 1986·8 cites·8 claims
- 3172US4275207AProcess for preparing 7-(1-hydroxyethyl)-3-(2-aminoethylthio)-1-carbadethiaceph-3-em-3-carboxylic acid and intermediate thereforMERCK & CO INC·Filed 1979·Granted Jun 23, 1981·6 cites·3 claims
- 3268US4739048AProcess for the preparation of thienamycin and intermediatesMERCK & CO INC·Filed 1985·Granted Apr 19, 1988·7 cites·1 claims
- 3368US4650794A6-(1-hydroxyethyl)-2-carbamimidoyl-pen-2-em-3-carboxylic acidsMERCK & CO INC·Filed 1982·Granted Mar 17, 1987·6 cites·4 claims
- 3467US4378315AProcess for the preparation of thienamycin and intermediatesMERCK & CO INC·Filed 1981·Granted Mar 29, 1983·6 cites·2 claims
- 3566US4400323A3-[1-Hydroxyethyl]-4-carboxymethyl-azetidin-2-oneMERCK & CO INC·Filed 1981·Granted Aug 23, 1983·5 cites·2 claims
- 3666US4060687ACephalosporins having a 3-α substituted alkyl groupingMERCK & CO INC·Filed 1975·Granted Nov 29, 1977·5 cites·3 claims
- 3764US4782051A2-aza-substituted 1-carbadethiapen-2-em-3 carboxylic acidsMERCK & CO INC·Filed 1987·Granted Nov 1, 1988·6 cites·7 claims
- 3864US4079179A6-Loweralkoxy or loweralkylthio-3-cephem-4-carboxylic acidsMERCK & CO INC·Filed 1976·Granted Mar 14, 1978·4 cites·10 claims
- 3963US4833167A2-aza-substituted 1-carbadethiapen-2-em-3-carboxylic acidsMERCK & CO INC·Filed 1985·Granted May 23, 1989·7 cites·13 claims
- 4063US4211707AProcess for hydrolytically cleaving O-sulfo thienamycinsMERCK & CO INC·Filed 1978·Granted Jul 8, 1980·4 cites·1 claims
- 4161US4369187A3-Substituted-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylic acidMERCK & CO INC·Filed 1980·Granted Jan 18, 1983·5 cites·3 claims
- 4261US4150223ACephalosporin phosphonic acid, sulfonic acid and sulfonamide compoundsMERCK & CO INC·Filed 1978·Granted Apr 17, 1979·4 cites·1 claims
- 4360US4748162A6-substituted-2-carbaminidoyl-pen-2-em-3-carboxylic acidsMERCK & CO INC·Filed 1984·Granted May 31, 1988·4 cites·25 claims
- 4459US4957912A7 acylamidocarbacephem antibacterial agentsMERCK & CO INC·Filed 1985·Granted Sep 18, 1990·7 cites·18 claims
- 4558US4610820AProcess for the preparation of thienamycin and intermediatesMERCK & CO INC·Filed 1985·Granted Sep 9, 1986·4 cites·2 claims
- 4656US6251890B1Carbapenem antibacterial compounds, compositions containing such compounds and methods of treatmentMERCK & CO INC·Filed 2000·Granted Jun 26, 2001·1 cites·23 claims
- 4756US4388310A6-Amido-2-S-oxides of substituted 2-organothio-pen-2-em-3-carboxylic acidsMERCK & CO INC·Filed 1982·Granted Jun 14, 1983·3 cites·5 claims
- 4856US4086423AProcess for cephem synthesisMERCK & CO INC·Filed 1975·Granted Apr 25, 1978·3 cites·2 claims
- 4955US6140318ACarbapenem antibacterial compounds, compositions containing such compounds and methods of treatmentMERCK & CO INC·Filed 1998·Granted Oct 31, 2000·5 cites·10 claims
- 5052US5496816ACarbapenem antibacterial compounds, compositions containing such compounds and methods of treatmentMERCK & CO INC·Filed 1994·Granted Mar 5, 1996·11 cites·34 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →