Inventor · disambiguated record
Norman A. Nelson
Also filed as: NELSON NORMAN A · NELSON NORMAN ALLEN
129 granted patents·999 citations·filing 1972–1985
99Inventor score
Files withUPJOHN CO120NELSON NORMAN A4NL INDUSTRIES INC3PUTCH SAMUEL1STEWART & STEVENSON OILTOOLS I1
Top patents by PatentIndex Score
129 records- 0199US4306076AInter-phenylene CBA compoundsUPJOHN CO·Filed 1980·Granted Dec 15, 1981·105 cites·10 claims
- 0298US4128577A15-Methyl- and 16-phenoxy-PGF2 α, amidesUPJOHN CO·Filed 1977·Granted Dec 5, 1978·60 cites·2 claims
- 0398US4111995A2-Decarboxy-2-hydroxymethyl-ω-phenoxy-PGD analogsUPJOHN CO·Filed 1977·Granted Sep 5, 1978·60 cites·83 claims
- 0498US4055602A2-Decarboxy-2-hydroxy-methyl-5-oxa-17-phenyl-18,19,20-trinor-PGF-analogsUPJOHN CO·Filed 1976·Granted Oct 25, 1977·36 cites·2 claims
- 0596US4526406AWellhead connectorNELSON NORMAN A·Filed 1981·Granted Jul 2, 1985·116 cites·18 claims
- 0695US4303796A16-Phenoxy prostaglandin F2α analogsUPJOHN CO·Filed 1973·Granted Dec 1, 1981·21 cites·31 claims
- 0792US4116988A16-Phenoxy prostaglandin E1 analogsUPJOHN CO·Filed 1977·Granted Sep 26, 1978·13 cites·10 claims
- 0891US4126754A11-Deoxy-cis-4,5-didehydro-ω-aryl-PGE compoundsUPJOHN CO·Filed 1978·Granted Nov 21, 1978·13 cites·4 claims
- 0991US4122282A2-Decarboxy-2-carboxyamino-methyl-PGFα compoundsUPJOHN CO·Filed 1976·Granted Oct 24, 1978·19 cites·146 claims
- 1090US4028419A2-Decarboxy-2-hydroxymethyl-cis-4,5-didehydro-PGE, compoundsUPJOHN CO·Filed 1976·Granted Jun 7, 1977·11 cites·22 claims
- 1190US3931279A5-Oxa prostaglandin F2.sub.α analogsUPJOHN CO·Filed 1973·Granted Jan 6, 1976·20 cites·44 claims
- 1289US4154950A15-Epi-15-methyl-16-phenoxy-PGE compoundsUPJOHN CO·Filed 1976·Granted May 15, 1979·20 cites·18 claims
- 1389US4116989A16-Phenoxy prostaglandin F1α analogsUPJOHN CO·Filed 1977·Granted Sep 26, 1978·10 cites·10 claims
- 1488US4471943AValve assembly and seatNL INDUSTRIES INC·Filed 1982·Granted Sep 18, 1984·45 cites·25 claims
- 1588US4216835ASystem for connecting an underwater platform to an underwater floorNELSON NORMAN A·Filed 1978·Granted Aug 12, 1980·66 cites·3 claims
- 1688US3933899APGE2 -oxa-phenylene compoundsUPJOHN CO·Filed 1974·Granted Jan 20, 1976·17 cites·31 claims
- 1786US4453745ALockdown mechanism for wellhead connectorNELSON NORMAN A·Filed 1981·Granted Jun 12, 1984·50 cites·19 claims
- 1885US4625942AValve assembly, seat and sealNL INDUSTRIES INC·Filed 1983·Granted Dec 2, 1986·40 cites·20 claims
- 1982US4332367ABlowout preventer having a variable ram sealNL INDUSTRIES INC·Filed 1980·Granted Jun 1, 1982·59 cites·12 claims
- 2080US4203924A2-Decarboxy-2-hydroxymethyl-deoxy-9,10-didehydro-PGD2 analogsUPJOHN CO·Filed 1977·Granted May 20, 1980·9 cites·15 claims
- 2180US4125713ACertain 5,6-dihydra-prostacyclin analogsUPJOHN CO·Filed 1977·Granted Nov 14, 1978·10 cites·72 claims
- 2279US4304907ABicyclo lactone intermediates for prostaglandin analogsUPJOHN CO·Filed 1972·Granted Dec 8, 1981·6 cites·9 claims
- 2379US3933895AOxa-phenylene compoundsUPJOHN CO·Filed 1974·Granted Jan 20, 1976·10 cites·5 claims
- 2478US4138573A11-Deoxy-2,2-difluoro-ω-aryl-PGE compoundsUPJOHN CO·Filed 1978·Granted Feb 6, 1979·7 cites·4 claims
- 2578US4048194A6α-Methoxy-4α-hydroxy-2β-hydroxymethyl-3.alpha.-tetrahydropyranacetic acid 4α γ-lactone ethers and acylatesUPJOHN CO·Filed 1976·Granted Sep 13, 1977·5 cites·3 claims
- 2678US3933898APGE1 -oxa phenylene compoundsUPJOHN CO·Filed 1974·Granted Jan 20, 1976·11 cites·66 claims
- 2777US3936487A3-Oxa prostaglandin Fα-type compoundsUPJOHN CO·Filed 1974·Granted Feb 3, 1976·10 cites·70 claims
- 2875US3944593A3-Oxa prostaglandin E-type compoundsUPJOHN CO·Filed 1974·Granted Mar 16, 1976·9 cites·70 claims
- 2973US4430502APyridinyl substituted benzimidazoles and quinoxalinesUPJOHN CO·Filed 1982·Granted Feb 7, 1984·13 cites·7 claims
- 3072US4138577A11-Deoxy-cis-4,5-didehydro-ω-aryl-PGF compoundsUPJOHN CO·Filed 1978·Granted Feb 6, 1979·5 cites·4 claims
- 3172US4020173A4α,6-Dihydroxy-2β-carboxaldehyde-3α-tetrahydropyranacetic acid γ-lactone, 6-alkyl ethersUPJOHN CO·Filed 1976·Granted Apr 26, 1977·5 cites·2 claims
- 3271US3934658AModular underwater well platform systemNELSON NORMAN A·Filed 1974·Granted Jan 27, 1976·28 cites·15 claims
- 3370US4085139A2-Decarboxy-2-amino-methyl-PGE and PGD analogsUPJOHN CO·Filed 1976·Granted Apr 18, 1978·4 cites·210 claims
- 3468US3933900APGEo oxa-phenylene compoundsUPJOHN CO·Filed 1974·Granted Jan 20, 1976·7 cites·31 claims
- 3564US4096178A13,14-Dihydro-16-phenoxy prostaglandin E1 analogsUPJOHN CO·Filed 1977·Granted Jun 20, 1978·2 cites·10 claims
- 3663US3974690AMethod of and apparatus for measuring annulus pressure in a wellSTEWART & STEVENSON OILTOOLS I·Filed 1975·Granted Aug 17, 1976·29 cites·9 claims
- 3762US4175202A4,5,6-Trinor-3,7,-inter-m-phenylene prostaglandin A1 analogsUPJOHN CO·Filed 1978·Granted Nov 20, 1979·4 cites·62 claims
- 3862US4108903A2-Decarboxy-2-hydroxymethyl-3,7-inter-m-phenylene-ω-phenyl-PGD1 compoundsUPJOHN CO·Filed 1977·Granted Aug 22, 1978·1 cites·39 claims
- 3962US4081478A2-Decarboxy-2-amino-methyl-PGF.sub.α compoundsUPJOHN CO·Filed 1976·Granted Mar 28, 1978·3 cites·73 claims
- 4062US4029693A2A,2B-Dihomo-11-deoxy-17(substituted phenyl)-18,19,20-trinor-PGE2 compounds and their corresponding estersUPJOHN CO·Filed 1975·Granted Jun 14, 1977·3 cites·22 claims
- 4158US4110382A2-Decarboxy-2-hydroxymethyl-ω-phenyl-PGE analogsUPJOHN CO·Filed 1977·Granted Aug 29, 1978·1 cites·119 claims
- 4258US4107216A2-Decarboxy-2-hydroxy-methyl-ω-phenyl-PGD analogsUPJOHN CO·Filed 1977·Granted Aug 15, 1978·1 cites·119 claims
- 4358US4020097ABicyclo [3.1.0]hexane-3-one derivatives of 11-deoxy PGEUPJOHN CO·Filed 1976·Granted Apr 26, 1977·2 cites·5 claims
- 4458US3933897APGA1 -oxa-phenylene compoundsUPJOHN CO·Filed 1974·Granted Jan 20, 1976·4 cites·30 claims
- 4557US4088691A2-Decarboxy-2-hydroxymethyl-cis-4,5-didehydro-11-deoxy-PGE1, compoundsUPJOHN CO·Filed 1977·Granted May 9, 1978·1 cites·22 claims
- 4656US4088692A2-Decarboxy-2-hydroxymethyl-5-oxa-11-deoxy-PGE1 compoundsUPJOHN CO·Filed 1977·Granted May 9, 1978·1 cites·22 claims
- 4756US4084058A4,5,6-Trinor-3,7-inter-m-phenylene prostaglandin F1α analogsUPJOHN CO·Filed 1977·Granted Apr 11, 1978·3 cites·37 claims
- 4856US4073808A2-Decarboxy-2-amino-methyl-PGA and 9-deoxy-9,10-didehydro-PGD analogsUPJOHN CO·Filed 1976·Granted Feb 14, 1978·2 cites·11 claims
- 4953US4107212A2-Decarboxy-2-hydroxymethyl-ω-phenyl-PGA or 9-deoxy-9,10-didehydro-PGD analogsUPJOHN CO·Filed 1977·Granted Aug 15, 1978·1 cites·119 claims
- 5053US4096335A16-Phenoxy prostaglandin B2 analogsUPJOHN CO·Filed 1977·Granted Jun 20, 1978·1 cites·10 claims
Showing the top 50 of 129 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →