Inventor · disambiguated record
Martin Graham Duke
Also filed as: DUKE MARTIN · DUKE MARTIN G · DUKE MARTIN GRAHAM
11 granted patents·4 pending applications·115 citations·filing 1984–2012
89Inventor score
Technology areasA24D
Files withBRITISH AMERICAN TOBACCO CO6DUKE MARTIN3ROTHMANS INTERNATIONAL LTD2BRANTON PETER1DUKE MARTIN GRAHAM1
Top patents by PatentIndex Score
15 records- 0185US9259031B2Filter for a smoking articleBRANTON PETER·Filed 2012·Granted Feb 16, 2016·14 cites·23 claims
- 0263US4660579ATobacco smoke filtersBRITISH AMERICAN TOBACCO CO·Filed 1985·Granted Apr 28, 1987·30 cites·7 claims
- 0362US8752556B2Smoking article filterWHITE PETER REX·Filed 2007·Granted Jun 17, 2014·1 cites·14 claims
- 0461US5657772ASmoking article and filter thereforROTHMANS INTERNATIONAL LTD·Filed 1994·Granted Aug 19, 1997·31 cites·10 claims
- 0557US9961936B2Multi-filter for a smoking productGRZONKA HORST·Filed 2009·Granted May 8, 2018·1 cites·15 claims
- 0653US2011232660A1Filter for a Smoking ArticleDUKE MARTIN·Filed 2009·Application pending·0 cites
- 0753US2011247637A1Filter For A Smoking ArticleDUKE MARTIN·Filed 2009·Application pending·0 cites
- 0853US2011220134A1Filter For A Smoking ArticleDUKE MARTIN·Filed 2009·Application pending·0 cites
- 0952US5415189ALightweight cigarette filter and cigarettes incorporating such filtersROTHMANS INTERNATIONAL LTD·Filed 1992·Granted May 16, 1995·21 cites·12 claims
- 1050US2010108085A1Smoking Article FilterDUKE MARTIN GRAHAM·Filed 2007·Application pending·0 cites
- 1134US4911684ASmoking article mouthpiecesBRITISH AMERICAN TOBACCO CO·Filed 1986·Granted Mar 27, 1990·4 cites·7 claims
- 1234US4649942ASmoking articlesBRITISH AMERICAN TOBACCO CO·Filed 1985·Granted Mar 17, 1987·4 cites·12 claims
- 1334US4644964ASmoking article mouthpiece elementsBRITISH AMERICAN TOBACCO CO·Filed 1985·Granted Feb 24, 1987·4 cites·11 claims
- 1433US4660576ASmoking articlesBRITISH AMERICAN TOBACCO CO·Filed 1985·Granted Apr 28, 1987·3 cites·13 claims
- 1531US4700724ASmoking-articles mouthpieces-elementsBRITISH AMERICAN TOBACCO CO·Filed 1984·Granted Oct 20, 1987·2 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →