Inventor · disambiguated record
William W. Levis, Jr.
Also filed as: HARTMAN ROBERT J · LEVIS JR WILLIAM W · LEVIS JR WILLIAM WALTER
22 granted patents·316 citations·filing 1973–1996
95Inventor score
Top patents by PatentIndex Score
22 records- 0194US4021385APolyurethane foams resistant to discolorationBASF WYANDOTTE CORP·Filed 1974·Granted May 3, 1977·38 cites·10 claims
- 0290US4487853ALow ethylene oxide/high primary hydroxyl content polyether-ester polyols and polyurethane foams based thereonBASF WYANDOTTE CORP·Filed 1983·Granted Dec 11, 1984·44 cites·6 claims
- 0387US4562290AAlkylene oxide adducts of vicinal toluenediamineBASF WYANDOTTE CORP·Filed 1981·Granted Dec 31, 1985·42 cites·10 claims
- 0484US4745133AFlame retardant polyurethane foamsBASF CORP·Filed 1987·Granted May 17, 1988·34 cites·6 claims
- 0583US4849459AFlame retardant polyurethane foamsBASF CORP·Filed 1988·Granted Jul 18, 1989·29 cites·13 claims
- 0681US4052345AProcess for the preparation of polyurethane foamsBASF WYANDOTTE CORP·Filed 1975·Granted Oct 4, 1977·29 cites·20 claims
- 0776US4421871APropylene oxide adducts of toluenediamineBASF WYANDOTTE CORP·Filed 1983·Granted Dec 20, 1983·25 cites·15 claims
- 0876US4391728APropylene oxide adducts of toluenediamineBASF WYANDOTTE CORP·Filed 1981·Granted Jul 5, 1983·27 cites·11 claims
- 0965US4228247AStabilized polyoxyalkylene polyether polyolBASF WYANDOTTE CORP·Filed 1979·Granted Oct 14, 1980·13 cites·8 claims
- 1052US4177335AProcess for preparing a polyurethane foam from an oxyalkylated productBASF WYANDOTTE CORP·Filed 1978·Granted Dec 4, 1979·8 cites·2 claims
- 1149US4149987AProcess for preparing halogenated aromatic hydroxy ethersBASF WYANDOTTE CORP·Filed 1978·Granted Apr 17, 1979·6 cites·9 claims
- 1242US4094910AProcess for preparing halogenated aromatic hydroxy ethersBASF WYANDOTTE CORP·Filed 1976·Granted Jun 13, 1978·4 cites·6 claims
- 1337US4762950ASelective oxyalkylaton of N-(2-hydroxyalkyl)-anilineBASF CORP·Filed 1985·Granted Aug 9, 1988·3 cites·6 claims
- 1437US3957922AProcess for preparing an oxyalkylated product and reaction product thereofBASF WYANDOTTE CORP·Filed 1973·Granted May 18, 1976·2 cites·21 claims
- 1536US4517383AAlkylene oxide adducts of aniline having reduced viscosityBASF WYANDOTTE CORP·Filed 1983·Granted May 14, 1985·3 cites·9 claims
- 1634US4637893ADelayed co-initiation process for preparing polyol blendsBASF CORP·Filed 1985·Granted Jan 20, 1987·2 cites·7 claims
- 1734US4430247AProcess for preparing an oxyalkylated productBASF WYANDOTTE CORP·Filed 1977·Granted Feb 7, 1984·2 cites·10 claims
- 1832US4097399AProcess for preparing an oxyalkylated productBASF WYANDOTTE CORP·Filed 1975·Granted Jun 27, 1978·1 cites·6 claims
- 1931USRE36358EFlame retardant polyurethane foamsBASF CORP·Filed 1996·Granted Oct 26, 1999·4 cites·2 claims
- 2030US4187357AProcess for the preparation of polyurethane foamsBASF WYANDOTTE CORP·Filed 1978·Granted Feb 5, 1980·0 cites·6 claims
- 2129US4105597APolyurethane foam from an oxyalkylated productBASF WYANDOTTE CORP·Filed 1977·Granted Aug 8, 1978·0 cites·7 claims
- 2228US4590225APolyurethane products based on alkylene oxide adducts of aniline having reduced viscosityBASF CORP·Filed 1985·Granted May 20, 1986·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →