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Sound Absorbing Material Nonwoven Fabric, Sound Absorbing Material, And Method For Producing Sound Absorbing Material Nonwoven Fabric
Abstract: The present invention addresses the problem of providing: a non-woven fabric for a sound-absorbing material having excellent sound absorption performance in low-frequency and high-frequency ranges, excellent productivity, and excellent quality; a sound-absorbing material; and a method for producing a non-woven fabric for a sound-absorbing material. This non-woven fabric for a sound-absorbing material contains: 30-80 mass% of short fiber A having a fineness of 0.4-0.9 dtex; and 20-70 mass% of short fiber B having a fineness of 1.1-20.0 dtex, wherein the card-passing coefficient of the short fiber A is within the range of 15-260 as represented by Equation (1) below. (1): Card-passing coefficient=(fineness×strength×velongation×vnumber of crimp×vcurliness)/(fiber length)
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
30 August 2021
Publication Number
36/2021
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
patent@depenning.com
Parent Application
Patent Number
Legal Status
Grant Date
2023-12-08
Renewal Date
Applicants
TORAY INDUSTRIES, INC.
1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo
1038666
Inventors
1. NAKAHARA, Makoto
c/o Seta Plant, Toray Industries, Inc., 1-1, Oe 1-chome, Otsu-shi, Shiga
5202141
2. KAJIYAMA, Hiroshi
c/o Seta Plant, Toray Industries, Inc., 1-1, Oe 1-chome, Otsu-shi, Shiga
5202141
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202147039137-IntimationOfGrant08-12-2023.pdf | 2023-12-08 |
| 1 | 202147039137-STATEMENT OF UNDERTAKING (FORM 3) [30-08-2021(online)].pdf | 2021-08-30 |
| 2 | 202147039137-PatentCertificate08-12-2023.pdf | 2023-12-08 |
| 2 | 202147039137-PROOF OF RIGHT [30-08-2021(online)].pdf | 2021-08-30 |
| 3 | 202147039137-PRIORITY DOCUMENTS [30-08-2021(online)].pdf | 2021-08-30 |
| 3 | 202147039137-CLAIMS [19-06-2023(online)].pdf | 2023-06-19 |
| 4 | 202147039137-FORM 1 [30-08-2021(online)].pdf | 2021-08-30 |
| 4 | 202147039137-COMPLETE SPECIFICATION [19-06-2023(online)].pdf | 2023-06-19 |
| 5 | 202147039137-FER_SER_REPLY [19-06-2023(online)].pdf | 2023-06-19 |
| 5 | 202147039137-DECLARATION OF INVENTORSHIP (FORM 5) [30-08-2021(online)].pdf | 2021-08-30 |
| 6 | 202147039137-FORM 3 [19-06-2023(online)].pdf | 2023-06-19 |
| 6 | 202147039137-COMPLETE SPECIFICATION [30-08-2021(online)].pdf | 2021-08-30 |
| 7 | 202147039137-RELEVANT DOCUMENTS [30-09-2021(online)].pdf | 2021-09-30 |
| 7 | 202147039137-Information under section 8(2) [19-06-2023(online)].pdf | 2023-06-19 |
| 8 | 202147039137-OTHERS [19-06-2023(online)].pdf | 2023-06-19 |
| 8 | 202147039137-MARKED COPIES OF AMENDEMENTS [30-09-2021(online)].pdf | 2021-09-30 |
| 9 | 202147039137-FER.pdf | 2023-02-03 |
| 9 | 202147039137-FORM 13 [30-09-2021(online)].pdf | 2021-09-30 |
| 10 | 202147039137-AMMENDED DOCUMENTS [30-09-2021(online)].pdf | 2021-09-30 |
| 10 | 202147039137-FORM 3 [12-12-2022(online)].pdf | 2022-12-12 |
| 11 | 202147039137-FORM 18 [28-11-2022(online)].pdf | 2022-11-28 |
| 11 | 202147039137.pdf | 2021-10-19 |
| 12 | 202147039137-Correspondence_Proof of Right-Form 1, GPA_16-09-2022.pdf | 2022-09-16 |
| 12 | 202147039137-FORM-26 [03-11-2021(online)].pdf | 2021-11-03 |
| 13 | 202147039137-2. Marked Copy under Rule 14(2) [21-01-2022(online)].pdf | 2022-01-21 |
| 13 | 202147039137-FORM 3 [19-01-2022(online)].pdf | 2022-01-19 |
| 14 | 202147039137-Retyped Pages under Rule 14(1) [21-01-2022(online)].pdf | 2022-01-21 |
| 15 | 202147039137-2. Marked Copy under Rule 14(2) [21-01-2022(online)].pdf | 2022-01-21 |
| 15 | 202147039137-FORM 3 [19-01-2022(online)].pdf | 2022-01-19 |
| 16 | 202147039137-Correspondence_Proof of Right-Form 1, GPA_16-09-2022.pdf | 2022-09-16 |
| 16 | 202147039137-FORM-26 [03-11-2021(online)].pdf | 2021-11-03 |
| 17 | 202147039137.pdf | 2021-10-19 |
| 17 | 202147039137-FORM 18 [28-11-2022(online)].pdf | 2022-11-28 |
| 18 | 202147039137-FORM 3 [12-12-2022(online)].pdf | 2022-12-12 |
| 18 | 202147039137-AMMENDED DOCUMENTS [30-09-2021(online)].pdf | 2021-09-30 |
| 19 | 202147039137-FER.pdf | 2023-02-03 |
| 19 | 202147039137-FORM 13 [30-09-2021(online)].pdf | 2021-09-30 |
| 20 | 202147039137-MARKED COPIES OF AMENDEMENTS [30-09-2021(online)].pdf | 2021-09-30 |
| 20 | 202147039137-OTHERS [19-06-2023(online)].pdf | 2023-06-19 |
| 21 | 202147039137-Information under section 8(2) [19-06-2023(online)].pdf | 2023-06-19 |
| 21 | 202147039137-RELEVANT DOCUMENTS [30-09-2021(online)].pdf | 2021-09-30 |
| 22 | 202147039137-COMPLETE SPECIFICATION [30-08-2021(online)].pdf | 2021-08-30 |
| 22 | 202147039137-FORM 3 [19-06-2023(online)].pdf | 2023-06-19 |
| 23 | 202147039137-DECLARATION OF INVENTORSHIP (FORM 5) [30-08-2021(online)].pdf | 2021-08-30 |
| 23 | 202147039137-FER_SER_REPLY [19-06-2023(online)].pdf | 2023-06-19 |
| 24 | 202147039137-COMPLETE SPECIFICATION [19-06-2023(online)].pdf | 2023-06-19 |
| 24 | 202147039137-FORM 1 [30-08-2021(online)].pdf | 2021-08-30 |
| 25 | 202147039137-PRIORITY DOCUMENTS [30-08-2021(online)].pdf | 2021-08-30 |
| 25 | 202147039137-CLAIMS [19-06-2023(online)].pdf | 2023-06-19 |
| 26 | 202147039137-PROOF OF RIGHT [30-08-2021(online)].pdf | 2021-08-30 |
| 26 | 202147039137-PatentCertificate08-12-2023.pdf | 2023-12-08 |
| 27 | 202147039137-STATEMENT OF UNDERTAKING (FORM 3) [30-08-2021(online)].pdf | 2021-08-30 |
| 27 | 202147039137-IntimationOfGrant08-12-2023.pdf | 2023-12-08 |
Search Strategy
| 1 | 202147039137E_03-02-2023.pdf |