公开(公告)号：US12195883B2

公开(公告)日：2025-01-14

申请号：US17279081

申请日：2019-09-27

Applicant: Spiber Inc.

Inventor： Yunosuke Abe ,  Masato Matsuo ,  Shota Togashi

IPC: D01F4/02 ,  D01D11/00

Abstract: The present invention provides a modified fibroin fiber having a shrinkage history of being irreversibly shrunk after spinning, the modified fibroin fiber containing modified fibroin, wherein a fiber diameter of a raw material fiber before being irreversibly shrunk exceeds 25 μm.

公开(公告)号：US11692015B2

公开(公告)日：2023-07-04

申请号：US16633589

申请日：2018-07-25

Applicant: Spiber Inc. ,  Riken

Inventor： Keisuke Morita ,  Yunosuke Abe ,  Takehisa Maekawa ,  Koichi Kotaka ,  Junichi Sugahara ,  Keiji Numata

IPC: C07K14/435 ,  C12N15/63 ,  D01F4/02

CPC classification number: C07K14/43518 ,  C12N15/63 ,  D01F4/02

Abstract: The present invention relates to a modified fibroin including a domain sequence represented by Formula 1: [(A)nmotif-REP]m or Formula 2: [(A)nmotif-REP]m−(A)n motif, in which the domain sequence has an amino acid sequence with a reduced content of a glutamine residue equivalent to an amino acid in which one or a plurality of glutamine residues in REP are deleted or substituted with other amino acid residues, as compared with a naturally occurring fibroin.

公开(公告)号：US20220074077A1

公开(公告)日：2022-03-10

申请号：US17279081

申请日：2019-09-27

Applicant: Spiber Inc.

Inventor： Yunosuke Abe ,  Masato Matsuo ,  Shota Togashi

IPC: D01F4/02 ,  D01D11/00

Abstract: The present invention provides a modified fibroin fiber having a shrinkage history of being irreversibly shrunk after spinning, the modified fibroin fiber containing modified fibroin, wherein a fiber diameter of a raw material fiber before being irreversibly shrunk exceeds 25 μm.

公开(公告)号：US20210395317A1

公开(公告)日：2021-12-23

申请号：US17279564

申请日：2019-09-30

Applicant: Spiber Inc.

Inventor： Yunosuke Abe ,  Hirotada Ando ,  Koichi Kotaka

IPC: C07K14/435 ,  C07K14/47 ,  D01D5/06 ,  D01F4/00 ,  D01F4/02

Abstract: Disclosed is a method for producing a protein fiber, the method including: bringing a spinning dope containing a protein and an organic solvent into contact with a coagulation liquid to coagulate the protein, wherein a content of the protein in the spinning dope is more than 10% by mass based on a total amount of the spinning dope, and the coagulation liquid contains water or an aqueous solution of pH 0.25 or more and pH 10.00 or less.

公开(公告)号：US20210095399A1

公开(公告)日：2021-04-01

申请号：US17043834

申请日：2019-04-03

Applicant: Spiber Inc.

Inventor： Yunosuke Abe ,  Shota Togashi

IPC: D01F8/02 ,  D01F4/02 ,  D01D5/32

Abstract: Provided is a side-by-side type composite fiber having a latent crimping ability, including a first component containing a modified fibroin and a second component containing a structural protein, in which the first component and the second component are joined to each other.