| 2024/0407,431 | SHEET FOR FLAVOR INHALATION ARTICLE | Aug 21, 24 | Dec 12, 24 | Japan Tobacco Inc. |
| 2024/0397,998 | SMOKING PRODUCT FILTER AND SMOKING PRODUCT COMPRISING SAME | Jun 01, 23 | Dec 05, 24 | KT&G Corporation |
| 2024/0324,659 | Filtering Apparatus For A Cigarette | Mar 27, 23 | Oct 03, 24 | Not available |
| 2024/0315,323 | Reduction of amines and nitrosamines in cigarette smoke vapors through a filter functionalized with olive tree polyphenols | Mar 23, 23 | Sep 26, 24 | MAGI’S LAB SRL |
| 2024/0260,642 | GEL RECEPTOR ROD INSERTABLE INTO ELECTRICALLY HEATED SMOKING ARTICLE, ELECTRICALLY HEATED SMOKING ARTICLE INCLUDING THE SAME, AND AEROSOL GENERATING DEVICE THEREFOR | Feb 02, 23 | Aug 08, 24 | Not available |
| 2024/0245,107 | MULTI-SEGMENT FILTER ELEMENT INCLUDING SMOKE-ALTERING FLAVORANT | Mar 15, 24 | Jul 25, 24 | Not available |
| 2024/0206,543 | CIGARETTE AND AEROSOL GENERATION DEVICE FOR CIGARETTE | Mar 08, 24 | Jun 27, 24 | KT&G Corporation |
| 2024/0099,363 | Filter for Cigarettes Made with Biological Material | Oct 17, 20 | Mar 28, 24 | Not available |
| 2024/0032,585 | HOLLOW LEAF TUBE WITH FLAVOR CAPSULE | Oct 02, 23 | Feb 01, 24 | Good Tree International, Inc. |
| 2023/0148,658 | Filter For Smoking or Vaping Article Comprising a Two-Layer Material | Nov 16, 22 | May 18, 23 | Not available |
| 2023/0000,140 | AEROSOL-GENERATING ARTICLE FILTER HAVING NOVEL FILTRATION MATERIAL | Nov 30, 20 | Jan 05, 23 | Philip Morris Products SA |
| 2023/0000,141 | AEROSOL-GENERATING ARTICLE FILTER HAVING NOVEL FILTRATION MATERIAL | Nov 30, 20 | Jan 05, 23 | Philip Morris Products SA |
| 2022/0160,025 | Combustible Smoking Filter | Jul 16, 21 | May 26, 22 | Not available |
| 2022/0132,913 | A SMOKING ARTICLE COMPRISING A TUBE FILTER AND A METHOD OF MANUFACTURING THE SAME | Nov 27, 20 | May 05, 22 | KT&G Corporation |
| 2020/0154,761 | FILTER WITH IMPROVED HARDNESS AND FILTRATION EFFICIENCY | Jan 07, 20 | May 21, 20 | Not available |
| 2017/0049,147 | FILTER WITH IMPROVED HARDNESS AND FILTRATION EFFICIENCY | Dec 23, 14 | Feb 23, 17 | PHILIP MORRIS PRODUCTS S.A. |
| 2017/0042,222 | SMOKING ARTICLE FILTERS | Oct 25, 16 | Feb 16, 17 | BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED |
| 2015/0374,030 | BIODEGRADABLE CIGARETTE FILTER TOW AND METHOD OF MANUFACTURE | Sep 09, 15 | Dec 31, 15 | GREENBUTTS LLC |
| 2015/0320,109 | SMOKING ARTICLE WITH POLYMER-CONTAINING SMOKABLE MATERIALS | Nov 25, 14 | Nov 12, 15 | CHEMICAL COMMERCIAL DEVELOPMENT, LLC |
| 2015/0164,134 | CIGARETTE FILTER | Jul 26, 12 | Jun 18, 15 | DAICEL CORPORATION |