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1. 发明申请

US20220287920A1 DENTAL PHOTOCURABLE COMPOSITION CONTAINING HIGH SOLUBLE PHOTOACID GENERATOR 有权
公开(公告)号：US20220287920A1
公开(公告)日：2022-09-15
申请号：US17201165
申请日：2021-03-15
申请人： SHOFU INC.
发明人： Kenzo YAMAMOTO , Daisuke HARA , Shunsuke MIYATA
IPC分类号： A61K6/62 , A61K6/887
摘要： To provide a dental photocurable composition which can exhibit excellent mechanical characteristics even after returning from a low temperature to room temperature.
To provide a dental photocurable composition, comprising (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator and (D) photopolymerization accelerator and the (C) photoacid generator may include only (C-1) iodonium salt-based compound of an anion having log S of −4 or less.

2. 发明公开

US20240238068A1 SYRINGE TIP HAVING BLADE DIRECTION AND DISCHARGE DIRECTION ALIGNED WITH EACH OTHER 审中-公开
公开(公告)号：US20240238068A1
公开(公告)日：2024-07-18
申请号：US18372237
申请日：2023-09-25
申请人： SHOFU INC.
发明人： Toshio SHIGA , Tsukasa SASAKI , Ryoji TAKEI , Toshiyuki NAKATSUKA , Shunsuke MIYATA , Hiroyuki KOBAYASHI , Akiko MATSUMOTO
IPC分类号： A61C5/62 , A61M5/31
CPC分类号： A61C5/62 , A61M5/3134
摘要： To provide a syringe tip that can prevent the syringe tip from unintentionally falling-off during filling and prevent viscous material from leaking out from gaps by securely attaching the syringe tip to a syringe and can provide excellent operability without obstructing a surgical field.
To provide syringe tip to be attached to a tip of a syringe containing viscous material to discharge the viscous material, comprising

a syringe engaging portion that engages with the syringe,
a cylindrical portion having a hollow portion with a virtual center line at its center and held by a user in the case of engaging the syringe tip with the syringe, and
a nozzle portion discharging the viscous material contained in the syringe,
wherein in the case that the maximum length (mm) between both end portions of the cylindrical portion on a virtual straight line orthogonal to the virtual central line is defined as first length A, the virtual straight line orthogonal to the virtual central line and including both end portions of the cylindrical portion constituting the first length A is defined as first virtual straight line, and the length (mm) between both end portions of the cylindrical portion on a second virtual straight line orthogonal to the virtual central line and orthogonal to the first virtual straight line is defined as second length B,
the first length A and the second length B satisfy the following relational expressions (1) to (3).

First length A/Second length B≥1.5 Relational expression (1):

13≥(First length A+Second length B)≥5 Relational expression (2):

5≥Second length B Relational expression (3):

3. 发明申请

US20200016043A1 DENTAL ADHESIVE COMPOSITION INCLUDING CHAIN TRANSFER AGENT 审中-公开
公开(公告)号：US20200016043A1
公开(公告)日：2020-01-16
申请号：US16357377
申请日：2019-03-19
申请人： SHOFU INC.
发明人： Shunsuke MIYATA , Hidefumi FUJIMURA
IPC分类号： A61K6/00
摘要： To provide a one paste type dental adhesive composition which has mechanical characteristics and aesthetic property required in the restoration material, is superior in durable adhesive strength to the tooth substance, and is hard to be affected by the polymerization shrinkage stress and exhibits excellent durable adhesive strength even if the composition of the present invention is collectively filled and cured.To provide a dental adhesive composition comprising: (a) an acidic group-non-containing polymerizable monomer, (b) an acidic group-containing polymerizable monomer, (c) a filler, (d) a photo polymerization initiator, and (e) a chain transfer agent, wherein the chain transfer agent (e) contains α-alkylstyrene compound.

4. 发明申请

US20220401312A1 DENTAL PHOTOCURABLE COMPOSITION EXCELLENT IN OPERABILITY AND STORAGE STABILITY 有权
公开(公告)号：US20220401312A1
公开(公告)日：2022-12-22
申请号：US17692568
申请日：2022-03-11
申请人： SHOFU INC.
发明人： Kenzo YAMAMOTO , Hideto KASABA , Daisuke HARA , Shunsuke MIYATA
IPC分类号： A61K6/896 , A61C5/00 , A61K6/76 , A61K6/62
摘要： [Problem]
To provide a dental photocurable composition which has sufficient mechanical property and whose rheological property is not deactivated even after long-term storage.
[Solution]
The dental photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (D) photopolymerization accelerator and (E) filler, wherein, the dental photocurable composition comprises (D1) aliphatic tertiary amine compound represented by formula (1) as the (D) photopolymerization accelerator, and the dental photocurable composition comprises (E1) hydrophobized silica fine particle having an average diameter of primary particle of 1 to 40 nm as the (E) filler. (wherein R1 represents a substituent consisting of three or more carbons having an electron-withdrawing group at α-carbon and/or ε-carbon of an amine starting from N, R2 represents a substituent consisting of three or more carbons which may have an electron-withdrawing group, R3 represents a substituent consisting of one or more carbons which may have an electron-withdrawing group, and α-carbon of N in the formula (1) is not an electron-withdrawing group.)

5. 发明申请

US20170231872A1 ORGANIC-INORGANIC COMPOSITE FILLER HAVING MANY REACTION GROUPS ON SURFACE AND DENTAL CURABLE COMPOSITION COMPOUNDED THEREWITH 审中-公开
公开(公告)号：US20170231872A1
公开(公告)日：2017-08-17
申请号：US15435506
申请日：2017-02-17
申请人： SHOFU INC.
发明人： Katsuya KIMOTO , Shunsuke MIYATA , Hideto KASABA
IPC分类号： A61K6/00 , A61K6/083
CPC分类号： A61K6/0088 , A61K6/0005 , A61K6/0047 , A61K6/0052 , A61K6/0055 , A61K6/007 , A61K6/0835
摘要： To provide an organic-inorganic composite filler containing; a polymerizable monomer (a) having at least one functional group selected from the group consisting of —OH group, —NH— group, and —NH2 group, a polymerizable monomer (b) having no functional group selected from the group consisting of —OH group, —NH— group, and —NH2 group, a polymerization initiator (c), an inorganic filler (d), and a silane compound (e) which generates —OH group by hydrolysis.

6. 发明申请

US20220387264A1 DENTAL PHOTOCURABLE COMPOSITION EXCELLENT IN STORAGE STABILITY 有权
公开(公告)号：US20220387264A1
公开(公告)日：2022-12-08
申请号：US17692598
申请日：2022-03-11
申请人： SHOFU INC.
发明人： Shunsuke MIYATA , Kenzo YAMAMOTO , Daisuke HARA
IPC分类号： A61K6/896 , A61K6/62 , A61K6/71 , A61K6/77 , A61K6/76
摘要： [Problem]
To provide a dental curable composition having good mechanical property and good storage stability before and after curing.
Solution
The dental curable composition of the present disclosure comprises (A) polymerizable monomer, (BC) polymerization initiator, (D) polymerization accelerator and (E) filler, wherein, the (BC) polymerization initiator comprises (B) photopolymerization initiator and/or (C) chemical polymerization initiator, the (B) photopolymerization initiator comprises (B1) photosensitizer and (B2) photoacid generator, the (C) chemical polymerization initiator comprises (C1) organic peroxide, the (E) filler comprises (E1) surface-treated basic filler, and the (E1) surface-treated basic filler is treated with (F1) surface treatment agent represented by the formula (1) and/or condensate thereof. [Formula (1)] MXn [Chemical formula 1] (In the formula, M is a metal atom selected from Si, Ti, Zr, and Al, X is H, OH or a hydrolyzable group, and may be the same or different from each other. In the case that M is Si, Ti or Zr, n is 4. In the case that M is Al, n is 3.)

7. 发明申请

US20220287921A1 DENTAL PHOTOCURABLE COMPOSITION EXCELLENT IN COLOR TONE SELECTIVITY 有权
公开(公告)号：US20220287921A1
公开(公告)日：2022-09-15
申请号：US17201180
申请日：2021-03-15
申请人： SHOFU INC.
发明人： Kenzo YAMAMOTO , Hideto KASABA , Daisuke HARA , Shunsuke MIYATA
IPC分类号： A61K6/62 , A61K6/71 , A61K6/78
摘要： [Problem]
To provide a dental photocurable composition having sufficient mechanical property and being excellent in color tone selectivity because of having a small color difference between before curing and after curing.
[Solution]
To provide a dental photocurable composition, comprising (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, (D) photopolymerization accelerator and (E) filler, wherein, the dental photocurable composition comprises (B-1) α-diketone compound as the (B) photosensitizer, and the dental photocurable composition comprises, with respect to 100 parts by mass of the (A) polymerizable monomer, 0.15 parts by mass or less of the (B-1) α-diketone compound, 0.5 parts by mass or more of the (C) photoacid generator, and 100 parts by mass or more of the (E) filler.

8. 发明公开

US20240252280A1 COMPULE AND SYRINGE TIP HAVING DISCHARGE NOZZLE DIAMETER WIDENED AT TIP 审中-公开
公开(公告)号：US20240252280A1
公开(公告)日：2024-08-01
申请号：US18372250
申请日：2023-09-25
申请人： SHOFU INC.
发明人： Toshio SHIGA , Tsukasa SASAKI , Ryoji TAKEI , Toshiyuki NAKATSUKA , Shunsuke MIYATA , Hiroyuki KOBAYASHI , Akiko MATSUMOTO
IPC分类号： A61C5/62
CPC分类号： A61C5/62
摘要： To provide a compule or syringe tip that can discharge viscous material in an intended shape by reducing deformation of the viscous material during discharge, can prevent viscous material from adhering to unintended portion by reducing an amount of viscous material that adheres to a nozzle tip, and can reduce dripping of viscous material to improve the anti-dripping property of the viscous material.
To provide a compule or syringe tip having a discharge structure for discharging viscous material from a discharge opening, wherein the discharge structure comprises a flow path that is formed around a virtual central line and allows the viscous material to move, and a tapered flow path formed between the flow path and the discharge opening, wherein a cross-sectional area of the tapered flow path gradually increases toward the discharge opening.

9. 发明申请

US20220287919A1 PHOTOCURABLE COMPOSITION EXCELLENT IN CURING DEPTH 有权
公开(公告)号：US20220287919A1
公开(公告)日：2022-09-15
申请号：US17201118
申请日：2021-03-15
申请人： SHOFU INC.
发明人： Kenzo YAMAMOTO , Hiroyuki KOBAYASHI , Daisuke HARA , Shunsuke MIYATA
IPC分类号： A61K6/62 , C08K5/00 , C08K5/14 , C08F220/32 , C08F220/28 , C08F2/50 , C08K5/17 , C08K5/08 , A61K6/61 , A61K6/887
摘要： [Problem]
To provide a photocurable composition having a high curing depth.
[Solution]
To provide a photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, and (D) photopolymerization accelerator, wherein, the photocurable composition comprises (D-1) amine compound represented by formula (1) as the (D) photopolymerization accelerator. (In the formula (1), R1 is a substituent represented by formula (2), and R2 and R3 are substituents represented by formula (2) or substituents selected from —OH group, —O— group, —S— group, —NH—C(O)—NH— group, —C(O)—O— group, —OC(O)— group, —OC(O)—NH— group, —NH—C(O)—O— group, halogen, an organic group which may have an alkoxysilyl group, an aromatic ring which may have a substituent and an alicyclic heterocycle which may have a substituent. Further, R2 and R3 may be H when at least one or more R4s of the formula (2) are an aromatic ring, and R3 may be H when R2 is a substituent represented by the formula (2).)

10. 发明申请

US20220287918A1 DENTAL ADHESIVE COMPOSITION EXCELLENT IN STORAGE STABILITY 有权
公开(公告)号：US20220287918A1
公开(公告)日：2022-09-15
申请号：US17201150
申请日：2021-03-15
申请人： SHOFU INC.
发明人： Kenzo YAMAMOTO , Daisuke HARA , Shunsuke MIYATA
IPC分类号： A61K6/30 , A61K6/62 , A61K6/831
摘要： [Problem]
To provide a dental adhesive composition having excellent storage stability and adhesive strength.
[Solution]
To provide a dental adhesive composition, comprising (A) polymerizable monomer, (D) photopolymerization accelerator, and (F) volatile organic solvent, wherein, the dental adhesive composition comprises (A-1) polymerizable monomer having an acidic group as the (A) polymerizable monomer, and the dental adhesive composition comprises (D-1) aliphatic tertiary amine compound represented by formula (1) as the (D) photopolymerization accelerator. (wherein R1 represents a substituent consisting of three or more carbons having an electron-withdrawing group at α-carbon and/or β-carbon of an amine starting from N, R2 represents a substituent consisting of three or more carbons which may have an electron-withdrawing group, R3 represents a substituent consisting of one or more carbons which may have an electron-withdrawing group, and α-carbon of N in the formula (1) is not an electron-withdrawing group.)

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