| US6805134B2              (en) | 1999-04-26 | 2004-10-19 | R. J. Reynolds Tobacco Company | Tobacco processing | 
| AU2001296580A1              (en)* | 2000-10-05 | 2002-04-15 | Nicolas Baskevitch | Reduction of nitrosamines in tobacco and tobacco products | 
| WO2002037990A2              (en) | 2000-11-10 | 2002-05-16 | Vector Tobacco Ltd. | Method and product for removing carcinogens from tobacco smoke | 
| US7798151B2              (en) | 2002-07-18 | 2010-09-21 | Us Smokeless Tobacco Co. | Reduction of constituents in tobacco | 
| JP3922985B2              (en)* | 2002-08-22 | 2007-05-30 | 日本たばこ産業株式会社 | Drying method of air-dried seed tobacco | 
| WO2006038558A1              (en)* | 2004-10-01 | 2006-04-13 | Japan Tobacco Inc. | Method of drying barley tobacco leaves and barley tobacco leaves dried thereby | 
| CN101416770B              (en)* | 2008-11-25 | 2011-08-24 | 云南省烟草科学研究所 | A flue-cured tobacco curing process for preventing and curing black ant skin symptoms during the tobacco leaf curing process | 
| US8151804B2              (en)* | 2008-12-23 | 2012-04-10 | Williams Jonnie R | Tobacco curing method | 
| US8539958B2              (en) | 2009-10-13 | 2013-09-24 | Philip Morris Usa Inc. | Oral moist smokeless tobacco products with net-structured gel coating and methods of making | 
| CN101933656B              (en)* | 2010-08-13 | 2012-10-03 | 川渝中烟工业有限责任公司 | Method for improving stem quality by combining steam explosion and microwave radiation technology | 
| RU2436481C1              (en)* | 2010-12-15 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2436458C1              (en)* | 2010-12-23 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2448586C1              (en)* | 2010-12-23 | 2012-04-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438506C1              (en)* | 2010-12-23 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2437590C1              (en)* | 2010-12-23 | 2011-12-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2436459C1              (en)* | 2010-12-23 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2448587C1              (en)* | 2010-12-27 | 2012-04-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2436460C1              (en)* | 2010-12-27 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2436461C1              (en)* | 2010-12-27 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2448588C1              (en)* | 2011-01-11 | 2012-04-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2436462C1              (en)* | 2011-01-11 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438510C1              (en)* | 2011-01-13 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438530C1              (en)* | 2011-01-13 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443244C1              (en)* | 2011-01-13 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438511C1              (en)* | 2011-01-13 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443363C1              (en)* | 2011-01-20 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438532C1              (en)* | 2011-01-20 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443246C1              (en)* | 2011-01-20 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438512C1              (en)* | 2011-01-20 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443245C1              (en)* | 2011-01-20 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2436463C1              (en)* | 2011-01-20 | 2011-12-20 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2438513C1              (en)* | 2011-01-20 | 2012-01-10 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2442473C1              (en)* | 2011-01-20 | 2012-02-20 | Олег Иванович Квасенков | The means to extract a non-smoking product from shag tobacco | 
| RU2443362C1              (en)* | 2011-01-20 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443247C1              (en)* | 2011-01-27 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443364C1              (en)* | 2011-01-27 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443365C1              (en)* | 2011-02-01 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443366C1              (en)* | 2011-02-01 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2443332C1              (en)* | 2011-02-10 | 2012-02-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| RU2451471C1              (en)* | 2011-02-18 | 2012-05-27 | Олег Иванович Квасенков | Method for production of non-smoking products of rustic tobacco | 
| US9066538B2              (en) | 2011-03-15 | 2015-06-30 | R.J. Reynolds Tobacco Company | Cured tobacco and method therefor | 
| RU2450760C1              (en)* | 2011-05-11 | 2012-05-20 | Олег Иванович Квасенков | Method for production of non-smoking products of tobacco | 
| RU2450759C1              (en)* | 2011-05-11 | 2012-05-20 | Олег Иванович Квасенков | Method for production of non-smoking products of tobacco | 
| RU2450761C1              (en)* | 2011-05-17 | 2012-05-20 | Олег Иванович Квасенков | Method for production of non-smoking products of tobacco (versions) | 
| RU2455910C1              (en)* | 2011-05-27 | 2012-07-20 | Олег Иванович Квасенков | Method for production of non-smoking products of tobacco (versions) | 
| CN102578697A              (en)* | 2011-12-20 | 2012-07-18 | 江苏省农业科学院 | Irradiation degradation method for tobacco-specific nitrosamines in cigarette | 
| CN102599646B              (en)* | 2012-02-21 | 2013-07-10 | 河南省科学院同位素研究所有限责任公司 | Method for reducing crotonaldehyde in mainstream smoke of cigarettes | 
| CN102599647B              (en)* | 2012-02-21 | 2013-10-16 | 河南省科学院同位素研究所有限责任公司 | Method for reducing ammonia in mainstream smoke of cigarettes | 
| CN102578700B              (en)* | 2012-02-21 | 2013-07-10 | 河南省科学院同位素研究所有限责任公司 | Method for reducing hydrocyanic acid in mainstream smoke of cigarette | 
| CN102578701B              (en)* | 2012-02-21 | 2013-07-10 | 河南省科学院同位素研究所有限责任公司 | Method for reducing polyaromatic hydrocarbon content in tar of cigarette smoke | 
| CN102578694A              (en)* | 2012-03-16 | 2012-07-18 | 上海聚华科技股份有限公司 | Method for using microwave drying in cut stem reconstruction process | 
| WO2014096283A2              (en) | 2012-12-21 | 2014-06-26 | Philip Morris Products S.A | Tobacco specific nitrosamine reduction in plants | 
| US20160029689A1              (en)* | 2013-03-15 | 2016-02-04 | Philip Morris Products S.A. | Methods for reducing one or more tobacco specific nitrosamines in tobacco material | 
| JP5992093B2              (en) | 2013-03-27 | 2016-09-14 | 日本たばこ産業株式会社 | Oral tobacco products | 
| US9155334B2              (en) | 2013-04-05 | 2015-10-13 | R.J. Reynolds Tobacco Company | Modification of bacterial profile of tobacco | 
| US9980509B2              (en) | 2013-04-05 | 2018-05-29 | R.J. Reynolds Tobacco Company | Modification of bacterial profile of tobacco | 
| CN103284301B              (en)* | 2013-04-16 | 2015-06-10 | 川渝中烟工业有限责任公司 | Cut tobacco drying technology method adopting roller pipe sheet type cut tobacco dryer to reduce NNK release amount of cigarettes | 
| CN103478886A              (en)* | 2013-10-12 | 2014-01-01 | 云南烟草科学研究院 | Method for using expansion stems for preparing paper-making process reconstituted tobacco leaves | 
| CN106459923B              (en) | 2014-05-08 | 2020-08-11 | 菲利普莫里斯产品有限公司 | Reduction of nicotine conversion to nornicotine in plants | 
| CN104146333B              (en)* | 2014-07-16 | 2016-03-23 | 云南农业大学 | A curing method of flue-cured tobacco variety NC297 imported from the United States | 
| EP3182844B1              (en)* | 2014-08-20 | 2018-08-15 | Philip Morris Products S.a.s. | Method for reducing the amount of tobacco specific nitrosamines in liquids containing nicotine | 
| CN104432459B              (en)* | 2014-12-29 | 2017-02-01 | 广东中烟工业有限责任公司 | Tobacco leaf baking method | 
| KR20160083785A              (en) | 2014-12-31 | 2016-07-12 | 한국기초과학지원연구원 | Mass spectrometer and method for controlling injection of electron beam thereof | 
| GB201504587D0              (en)* | 2015-03-18 | 2015-05-06 | British American Tobacco Co | Improvements in methods of treating tobacco. | 
| CN105004722A              (en)* | 2015-05-18 | 2015-10-28 | 西北农林科技大学 | Method for rapidly detecting maturity of tobacco leaves | 
| CN105249522A              (en)* | 2015-09-25 | 2016-01-20 | 红云红河烟草(集团)有限责任公司 | Method for processing tobacco stems and cut stems | 
| CN105973815B              (en)* | 2016-04-27 | 2019-02-26 | 华环国际烟草有限公司 | A method to test the effect of homogenization-based control in threshing and redrying | 
| CN106235371B              (en)* | 2016-09-29 | 2018-06-01 | 贵州省烟草公司遵义市公司桐梓县分公司 | Bulk curing barn dissipates the persistently overheating roasting fragrant roasting soft baking method of leaf accumulation dress cigarette | 
| US10813383B2              (en)* | 2016-12-12 | 2020-10-27 | R.J. Reynolds Tobacco Company | Dehydration of tobacco and tobacco-derived materials | 
| CN106666806B              (en)* | 2017-02-23 | 2018-03-02 | 中国农业科学院烟草研究所 | A kind of preparation method of buccal cigarette pipe tobacco | 
| US11278050B2              (en) | 2017-10-20 | 2022-03-22 | R.J. Reynolds Tobacco Company | Methods for treating tobacco and tobacco-derived materials to reduce nitrosamines | 
| CN108185497B              (en)* | 2018-01-18 | 2020-06-23 | 福建中烟工业有限责任公司 | Primary roasting method of Cuibi No. 1 tobacco leaves, obtained tobacco leaves and application thereof | 
| JP6750835B2              (en)* | 2018-08-15 | 2020-09-02 | 日本たばこ産業株式会社 | Oral tobacco composition and method for producing the same | 
| US11213062B2              (en) | 2019-05-09 | 2022-01-04 | American Snuff Company | Stabilizer for moist snuff | 
| CN111707785B              (en)* | 2020-06-10 | 2023-11-21 | 河南中烟工业有限责任公司 | A method for improving the quality of large, deep and thick sliced tobacco leaves | 
| CN112741362B              (en)* | 2021-01-07 | 2025-02-18 | 广东中烟工业有限责任公司 | Method and device for improving comfort of aged cigarettes | 
| CN114617281B              (en)* | 2022-03-17 | 2023-03-28 | 吉林烟草工业有限责任公司 | Baking method for upper leaves of flue-cured tobaccos in northern China | 
| CN114747783B              (en)* | 2022-05-14 | 2023-06-20 | 河南中烟工业有限责任公司 | A method for increasing the soluble sugar content of upper leaves | 
| CN118383543B              (en)* | 2024-05-08 | 2025-08-01 | 云南中烟工业有限责任公司 | Method for modulating sun-cured tobacco by irradiation and application |