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Multilayer Filter Material
Abstract: The present invention addresses the problem of providing a multilayer filter material in which degradation of deodorizing performance after an extended period of storage of filter material is suppressed, which has excellent deodorizing performance, and has low pressure loss. This multilayer filter material comprises three or more layers of overlapping non-woven fabric layers, and has two or more inter-layer regions configured from two of the non-woven fabric layers that are adjacent to each other. In a first inter-layer region among the inter-layer regions, function particles A having an average particle diameter of from 50 to 100 µm are present. In a second inter-layer region selected from the other inter-layer regions, function particles B having an average particle diameter of from 150 to 500 µm are present.
Notices, Deadlines & Correspondence
Patent Information
Applicants
TORAY INDUSTRIES, INC.
Inventors
1. YATSUNAMI,Yuji
2. ASADA, Yasuhiro
3. TAKAKI, Yufuko
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202047046601-STATEMENT OF UNDERTAKING (FORM 3) [26-10-2020(online)].pdf | 2020-10-26 |
| 2 | 202047046601-PRIORITY DOCUMENTS [26-10-2020(online)].pdf | 2020-10-26 |
| 3 | 202047046601-FORM 1 [26-10-2020(online)].pdf | 2020-10-26 |
| 4 | 202047046601-DECLARATION OF INVENTORSHIP (FORM 5) [26-10-2020(online)].pdf | 2020-10-26 |
| 5 | 202047046601-COMPLETE SPECIFICATION [26-10-2020(online)].pdf | 2020-10-26 |
| 6 | 202047046601-FORM 3 [19-11-2020(online)].pdf | 2020-11-19 |
| 7 | 202047046601-Proof of Right [20-11-2020(online)].pdf | 2020-11-20 |
| 8 | 202047046601-FORM 3 [08-06-2021(online)].pdf | 2021-06-08 |
| 9 | 202047046601.pdf | 2021-10-18 |
| 10 | 202047046601-Correspondence_Form1_23-02-2022.pdf | 2022-02-23 |
| 11 | 202047046601-FORM 18 [07-03-2022(online)].pdf | 2022-03-07 |
| 12 | 202047046601-FER.pdf | 2022-05-20 |
| 13 | 202047046601-FORM-26 [22-08-2022(online)].pdf | 2022-08-22 |
| 14 | 202047046601-Correspondence_GPA_25-08-2022.pdf | 2022-08-25 |
| 15 | 202047046601-PETITION UNDER RULE 137 [23-09-2022(online)].pdf | 2022-09-23 |
| 16 | 202047046601-PETITION UNDER RULE 137 [23-09-2022(online)]-1.pdf | 2022-09-23 |
| 17 | 202047046601-OTHERS [23-09-2022(online)].pdf | 2022-09-23 |
| 18 | 202047046601-Information under section 8(2) [23-09-2022(online)].pdf | 2022-09-23 |
| 19 | 202047046601-FORM 3 [23-09-2022(online)].pdf | 2022-09-23 |
| 20 | 202047046601-FER_SER_REPLY [23-09-2022(online)].pdf | 2022-09-23 |
| 21 | 202047046601-CLAIMS [23-09-2022(online)].pdf | 2022-09-23 |
| 22 | 202047046601-ABSTRACT [23-09-2022(online)].pdf | 2022-09-23 |
| 23 | 202047046601-FORM 3 [14-06-2023(online)].pdf | 2023-06-14 |
| 24 | 202047046601-FORM 3 [08-12-2023(online)].pdf | 2023-12-08 |
| 25 | 202047046601-US(14)-HearingNotice-(HearingDate-02-01-2024).pdf | 2023-12-11 |
| 26 | 202047046601-FORM-26 [29-12-2023(online)].pdf | 2023-12-29 |
| 27 | 202047046601-Correspondence to notify the Controller [29-12-2023(online)].pdf | 2023-12-29 |
| 28 | 202047046601-Written submissions and relevant documents [16-01-2024(online)].pdf | 2024-01-16 |
| 29 | 202047046601-Retyped Pages under Rule 14(1) [16-01-2024(online)].pdf | 2024-01-16 |
| 30 | 202047046601-Information under section 8(2) [16-01-2024(online)].pdf | 2024-01-16 |
| 31 | 202047046601-FORM 3 [16-01-2024(online)].pdf | 2024-01-16 |
| 32 | 202047046601-2. Marked Copy under Rule 14(2) [16-01-2024(online)].pdf | 2024-01-16 |
| 33 | 202047046601-PatentCertificate17-01-2024.pdf | 2024-01-17 |
| 34 | 202047046601-IntimationOfGrant17-01-2024.pdf | 2024-01-17 |
Search Strategy
| 1 | 202047046601E_20-05-2022.pdf |