Inventor · disambiguated record
W. Geoffrey Chan
Also filed as: CHAN W G · CHAN W GEOFFREY
20 granted patents·5 pending applications·164 citations·filing 1984–2018
94Inventor score
Top patents by PatentIndex Score
25 records- 0179US5301693ASmoking compositions containing an α-alkylcinnamaldehyde-release additivePHILIP MORRIS INC·Filed 1992·Granted Apr 12, 1994·17 cites·32 claims
- 0278US5228461ASmoking compositions containing a vanillin-release additivePHILIP MORRIS INC·Filed 1992·Granted Jul 20, 1993·15 cites·12 claims
- 0377US8042552B2Incorporation of ammonia-release compounds in smoking articlesPHILIP MORRIS USA INC·Filed 2006·Granted Oct 25, 2011·4 cites·13 claims
- 0473US8555897B2Method of making a cigarette and method of reducing cytotoxicity in tobacco smokeXUE LIXIN·Filed 2011·Granted Oct 15, 2013·3 cites·12 claims
- 0570US7581543B2Reduction of phenolic compound precursors in tobaccoPHILIP MORRIS USA INC·Filed 2005·Granted Sep 1, 2009·6 cites·14 claims
- 0669US5538018ACigarette smoking products containing a vanillin-release additivePHILIP MORRIS INC·Filed 1995·Granted Jul 23, 1996·47 cites·9 claims
- 0769US5139034ASmoking compositions containing a menthol-release additivePHILIP MORRIS INC·Filed 1990·Granted Aug 18, 1992·24 cites·19 claims
- 0868US5172706ASmoking compositions containing an oxalate flavorant-release additivePHILIP MORRIS INC·Filed 1992·Granted Dec 22, 1992·10 cites·10 claims
- 0965US2019053533A1Incorporation of ammonia release compounds in smoking articlesPHILIP MORRIS USA INC·Filed 2018·Application pending·0 cites
- 1062US10051883B2Incorporation of ammonia release compounds in smoking articlesPHILIP MORRIS USA INC·Filed 2013·Granted Aug 21, 2018·0 cites·9 claims
- 1161US6817365B2Cigarette paper having heat-degradable filler particles, and cigarette comprising a cigarette paper wrapper having heat-degradable filler particlesPHILIP MORRIS USA INC·Filed 2001·Granted Nov 16, 2004·4 cites·53 claims
- 1257US8176923B2Smoking articles and method for treating tobacco material with a suspension containing bismuth containing compounds and optionally glycerinXUE LIXIN·Filed 2008·Granted May 15, 2012·0 cites·17 claims
- 1354US2011083684A1Methods for removing heavy metals from aqueous extracts of tobaccoPHILIP MORRIS USA INC·Filed 2009·Application pending·0 cites
- 1454US2019116867A1Smoking article including alkanoylated glycoside and method of makingPHILIP MORRIS USA INC·Filed 2018·Application pending·0 cites
- 1553US2009000631A1Smoking articles and method for incorporating salts of lanthanide metals for reducing TPM cytotoxicity and targeted constituents in tobacco smokePHILIP MORRIS USA INC·Filed 2008·Application pending·0 cites
- 1647US4538627ASmoking compositions containing a β-hydroxy-γ-ketoester flavorant-release additivePHILIP MORRIS INC·Filed 1984·Granted Sep 3, 1985·11 cites·11 claims
- 1744US5241105AOxalate estersPHILIP MORRIS INC·Filed 1992·Granted Aug 31, 1993·2 cites·14 claims
- 1842US4701282Aβ-hydroxy-γ-ketoester flavorant-release additivesPHILIP MORRIS INC·Filed 1985·Granted Oct 20, 1987·9 cites·11 claims
- 1939US2006162733A1Process of reducing generation of benzo[a]pyrene during smokingPHILIP MORRIS USA INC·Filed 2005·Application pending·0 cites
- 2038US9034106B2Smoking article including alkanoylated glycosideCHAN W GEOFFREY·Filed 2010·Granted May 19, 2015·0 cites·10 claims
- 2135US5172704ASmoking compositions containing a vanillin-release additivePHILIP MORRIS INC·Filed 1991·Granted Dec 22, 1992·5 cites·10 claims
- 2235US5129954ABeta-hydroxyesters for use as vanillin-release additives in smoking compositionsPHILIP MORRIS INC·Filed 1990·Granted Jul 14, 1992·5 cites·27 claims
- 2332US5256785ASmoking compositions containing an oxalate flavorant-release additivePHILIP MORRIS INC·Filed 1992·Granted Oct 26, 1993·2 cites·6 claims
- 2430US5218118ASmoking compositions containing a pyrazine-ethanol flavorant-release additivePHILIP MORRIS INC·Filed 1992·Granted Jun 8, 1993·0 cites·3 claims
- 2530US5174308ASmoking compositions containing a pyrazineethanol flavorant-release additivePHILIP MORRIS INC·Filed 1991·Granted Dec 29, 1992·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →