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Separation Membrane And Method For Producing Separation Membrane
Abstract: The present invention provides a separation membrane that contains, as a major component A, a thermoplastic polymer selected from cellulose esters and polyamides. All regions 1-5 obtained by dividing a prescribed cross-sectional surface of the separation membrane at an equal interval in the thickness direction from one surface of the separation membrane have a number average pore diameter change rate ai of -0.25 to 0.25. At least one of the regions 1-5 satisfies conditions (a) and (b). (a) Area average pore diameter Ds / number average pore diameter Dn is 2.50-6.00. (b) When the average of nearest neighbor distance between adjacent coarse pores having a pore diameter greater than Ds is defined as La, the average number W of fine pores that are located at a distance smaller than La from the center of the respective coarse pores and that have a pore diameter smaller than Dn is 10-30.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
21 June 2022
Publication Number
25/2022
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
patent@depenning.com
Parent Application
Applicants
TORAY INDUSTRIES, INC.
1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo
1038666
Inventors
1. EIMURA Hiroki
c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga
5208558
2. TAKADA Koichi
c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga
5208558
3. OTSUKA Marina
c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga
5208558
4. HANAKAWA Masayuki
c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga
5208558
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202247035435-FER.pdf | 2025-03-05 |
| 1 | 202247035435-FORM 18 [07-07-2023(online)].pdf | 2023-07-07 |
| 1 | 202247035435-FORM 3 [28-04-2025(online)]-1.pdf | 2025-04-28 |
| 1 | 202247035435.pdf | 2022-06-21 |
| 2 | 202247035435-Correspondence_Form 1 And Form 26_24-01-2023.pdf | 2023-01-24 |
| 2 | 202247035435-FORM 18 [07-07-2023(online)].pdf | 2023-07-07 |
| 2 | 202247035435-FORM 3 [28-04-2025(online)].pdf | 2025-04-28 |
| 2 | 202247035435-STATEMENT OF UNDERTAKING (FORM 3) [21-06-2022(online)].pdf | 2022-06-21 |
| 3 | 202247035435-FORM 3 [17-11-2022(online)].pdf | 2022-11-17 |
| 3 | 202247035435-Correspondence_Form 1 And Form 26_24-01-2023.pdf | 2023-01-24 |
| 3 | 202247035435-FER.pdf | 2025-03-05 |
| 3 | 202247035435-PROOF OF RIGHT [21-06-2022(online)].pdf | 2022-06-21 |
| 4 | 202247035435-FORM 18 [07-07-2023(online)].pdf | 2023-07-07 |
| 4 | 202247035435-FORM 3 [17-11-2022(online)].pdf | 2022-11-17 |
| 4 | 202247035435-FORM-26 [04-09-2022(online)].pdf | 2022-09-04 |
| 4 | 202247035435-PRIORITY DOCUMENTS [21-06-2022(online)].pdf | 2022-06-21 |
| 5 | 202247035435-AMMENDED DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 5 | 202247035435-Correspondence_Form 1 And Form 26_24-01-2023.pdf | 2023-01-24 |
| 5 | 202247035435-FORM 1 [21-06-2022(online)].pdf | 2022-06-21 |
| 5 | 202247035435-FORM-26 [04-09-2022(online)].pdf | 2022-09-04 |
| 6 | 202247035435-AMMENDED DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 6 | 202247035435-DRAWINGS [21-06-2022(online)].pdf | 2022-06-21 |
| 6 | 202247035435-FORM 13 [24-06-2022(online)].pdf | 2022-06-24 |
| 6 | 202247035435-FORM 3 [17-11-2022(online)].pdf | 2022-11-17 |
| 7 | 202247035435-DECLARATION OF INVENTORSHIP (FORM 5) [21-06-2022(online)].pdf | 2022-06-21 |
| 7 | 202247035435-FORM 13 [24-06-2022(online)].pdf | 2022-06-24 |
| 7 | 202247035435-FORM-26 [04-09-2022(online)].pdf | 2022-09-04 |
| 7 | 202247035435-MARKED COPIES OF AMENDEMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 8 | 202247035435-RELEVANT DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 8 | 202247035435-AMMENDED DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 8 | 202247035435-COMPLETE SPECIFICATION [21-06-2022(online)].pdf | 2022-06-21 |
| 8 | 202247035435-MARKED COPIES OF AMENDEMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 9 | 202247035435-COMPLETE SPECIFICATION [21-06-2022(online)].pdf | 2022-06-21 |
| 9 | 202247035435-FORM 13 [24-06-2022(online)].pdf | 2022-06-24 |
| 9 | 202247035435-RELEVANT DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 10 | 202247035435-COMPLETE SPECIFICATION [21-06-2022(online)].pdf | 2022-06-21 |
| 10 | 202247035435-DECLARATION OF INVENTORSHIP (FORM 5) [21-06-2022(online)].pdf | 2022-06-21 |
| 10 | 202247035435-MARKED COPIES OF AMENDEMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 11 | 202247035435-DECLARATION OF INVENTORSHIP (FORM 5) [21-06-2022(online)].pdf | 2022-06-21 |
| 11 | 202247035435-DRAWINGS [21-06-2022(online)].pdf | 2022-06-21 |
| 11 | 202247035435-FORM 13 [24-06-2022(online)].pdf | 2022-06-24 |
| 11 | 202247035435-RELEVANT DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 12 | 202247035435-FORM 1 [21-06-2022(online)].pdf | 2022-06-21 |
| 12 | 202247035435-DRAWINGS [21-06-2022(online)].pdf | 2022-06-21 |
| 12 | 202247035435-COMPLETE SPECIFICATION [21-06-2022(online)].pdf | 2022-06-21 |
| 12 | 202247035435-AMMENDED DOCUMENTS [24-06-2022(online)].pdf | 2022-06-24 |
| 13 | 202247035435-DECLARATION OF INVENTORSHIP (FORM 5) [21-06-2022(online)].pdf | 2022-06-21 |
| 13 | 202247035435-FORM 1 [21-06-2022(online)].pdf | 2022-06-21 |
| 13 | 202247035435-FORM-26 [04-09-2022(online)].pdf | 2022-09-04 |
| 13 | 202247035435-PRIORITY DOCUMENTS [21-06-2022(online)].pdf | 2022-06-21 |
| 14 | 202247035435-DRAWINGS [21-06-2022(online)].pdf | 2022-06-21 |
| 14 | 202247035435-FORM 3 [17-11-2022(online)].pdf | 2022-11-17 |
| 14 | 202247035435-PRIORITY DOCUMENTS [21-06-2022(online)].pdf | 2022-06-21 |
| 14 | 202247035435-PROOF OF RIGHT [21-06-2022(online)].pdf | 2022-06-21 |
| 15 | 202247035435-Correspondence_Form 1 And Form 26_24-01-2023.pdf | 2023-01-24 |
| 15 | 202247035435-FORM 1 [21-06-2022(online)].pdf | 2022-06-21 |
| 15 | 202247035435-PROOF OF RIGHT [21-06-2022(online)].pdf | 2022-06-21 |
| 15 | 202247035435-STATEMENT OF UNDERTAKING (FORM 3) [21-06-2022(online)].pdf | 2022-06-21 |
| 16 | 202247035435-FORM 18 [07-07-2023(online)].pdf | 2023-07-07 |
| 16 | 202247035435-PRIORITY DOCUMENTS [21-06-2022(online)].pdf | 2022-06-21 |
| 16 | 202247035435-STATEMENT OF UNDERTAKING (FORM 3) [21-06-2022(online)].pdf | 2022-06-21 |
| 16 | 202247035435.pdf | 2022-06-21 |
| 17 | 202247035435.pdf | 2022-06-21 |
| 17 | 202247035435-PROOF OF RIGHT [21-06-2022(online)].pdf | 2022-06-21 |
| 17 | 202247035435-FER.pdf | 2025-03-05 |
| 18 | 202247035435-STATEMENT OF UNDERTAKING (FORM 3) [21-06-2022(online)].pdf | 2022-06-21 |
| 18 | 202247035435-FORM 3 [28-04-2025(online)].pdf | 2025-04-28 |
| 19 | 202247035435.pdf | 2022-06-21 |
| 19 | 202247035435-FORM 3 [28-04-2025(online)]-1.pdf | 2025-04-28 |
| 20 | 202247035435-OTHERS [12-08-2025(online)].pdf | 2025-08-12 |
| 21 | 202247035435-FORM-26 [12-08-2025(online)].pdf | 2025-08-12 |
| 22 | 202247035435-FER_SER_REPLY [12-08-2025(online)].pdf | 2025-08-12 |
| 23 | 202247035435-CLAIMS [12-08-2025(online)].pdf | 2025-08-12 |
Search Strategy
| 1 | 202247035435SSE_30-11-2023.pdf |