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Found results for
 patents
1.
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Modified thioxanthone photoinitiators
| Application Number |
17791834 |
| Grant Number |
12535735 |
| Status |
In Force |
| Filing Date |
2021-01-15 |
| First Publication Date |
2023-03-16 |
| Grant Date |
2026-01-27 |
| Owner |
- Lintfield Limited (United Kingdom)
- Tokyo Electron Limited (Japan)
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| Inventor |
- Wall, Christopher
- Dinh, Cong-Que
- Nagahara, Seiji
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Abstract
Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitiated methods for producing photoresist structured.
IPC Classes ?
- G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists
- C07D 335/16 - Oxygen atoms, e.g. thioxanthones
- C07D 495/10 - Spiro-condensed systems
- C07D 519/00 - Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups or
- G03F 7/038 - Macromolecular compounds which are rendered insoluble or differentially wettable
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2.
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Thioxanthone derivatives, composition comprising the same and pattern forming method comprising said composition
| Application Number |
17261267 |
| Grant Number |
12398152 |
| Status |
In Force |
| Filing Date |
2019-07-18 |
| First Publication Date |
2021-09-09 |
| Grant Date |
2025-08-26 |
| Owner |
- LINTFIELD LIMITED (United Kingdom)
- TOKYO ELECTRON LIMITED (Japan)
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| Inventor |
- Wall, Christopher
- Nagahara, Seiji
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Abstract
Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitiated methods for producing photoresist structures.
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3.
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MODIFIED THIOXANTHONE PHOTOINITIATORS
| Application Number |
GB2021050091 |
| Publication Number |
2021/144582 |
| Status |
In Force |
| Filing Date |
2021-01-15 |
| Publication Date |
2021-07-22 |
| Owner |
- LINTFIELD LIMITED (United Kingdom)
- TOKYO ELECTRON LIMITED (Japan)
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| Inventor |
- Wall, Christopher
- Dinh, Cong-Que
- Nagahara, Seiji
|
Abstract
Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitated methods for producing photoresist structured.
IPC Classes ?
- C07D 335/16 - Oxygen atoms, e.g. thioxanthones
- C07D 495/10 - Spiro-condensed systems
- C07D 519/00 - Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups or
- G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
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4.
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THIOXANTHONE DERIVATIVES, COMPOSITION COMPRISING THE SAME AND PATTERN FORMING METHOD COMPRISING SAID COMPOSITION
| Application Number |
EP2019069451 |
| Publication Number |
2020/016389 |
| Status |
In Force |
| Filing Date |
2019-07-18 |
| Publication Date |
2020-01-23 |
| Owner |
- LINTFIELD LIMITED (United Kingdom)
- TOKYO ELECTRON LIMITED (Japan)
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| Inventor |
- Wall, Christopher
- Nagahara, Seiji
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Abstract
Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitated methods for producing photoresist structures.
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5.
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Photoinitiated reactions
| Application Number |
16248054 |
| Grant Number |
10919909 |
| Status |
In Force |
| Filing Date |
2019-01-15 |
| First Publication Date |
2019-07-11 |
| Grant Date |
2021-02-16 |
| Owner |
LINTFIELD LIMITED (United Kingdom)
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| Inventor |
- Johnstone, Robert A. W.
- Loureiro, Rui
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Abstract
Disclosed is a method for the photoinitiated transformation of a transformable reactive substrate. The method includes an initial step in which a protected ketone photoinitator species which is present in the substrate is deprotected to form the corresponding ketone photoinitiator species for use in a subsequent photoinitiated reaction in the method. The ketone group of the photoinitiator is protected by an unsubstituted 1,3 dioxolane group. Also disclosed are a composition which may be used in the method, the use of the protected ketone photoinitiator in a photoinitiated reaction, as well as the protected ketone photoinitiators themselves.
IPC Classes ?
- C07D 495/10 - Spiro-condensed systems
- B01J 19/12 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor employing electromagnetic waves
- C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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6.
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PHOTOINITIATED REACTIONS
| Application Number |
GB2011050064 |
| Publication Number |
2011/086389 |
| Status |
In Force |
| Filing Date |
2011-01-17 |
| Publication Date |
2011-07-21 |
| Owner |
LINTFIELD LIMITED (United Kingdom)
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| Inventor |
- Johnstone, Robert, A., W.
- Loureiro, Rui
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Abstract
Disclosed is a method for the photoinitiated transformation of a transformable reactive substrate. The method includes an initial step in which a protected ketone photoinitiator species which is present in the substrate is deprotected to form the corresponding ketone photoinitiator species for use in a subsequent photoinitiated reaction in the method. The ketone group of the photoinitiator is protected by an unsubstituted 1, 3 dioxolane group. Also disclosed are a composition which may be used in the method, the use of the protected ketone photoinitiator in a photoinitiated reaction, as well as the protected ketone photoinitiators themselves.
IPC Classes ?
- C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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