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Patent US4083725A successfully refreshed from Google Patents.
US4083725A
Expired / Lapsed
US
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Photosensitive composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1976-04-19
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Granted: 1978-04-11
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Expires: 1996-04-19
Abstract
Abstract A photosensitive composition is prepared from a mixture of a cinnamic acid photosensitive resin and a halogen-substituted benzanthrone sensitizer.
Inventors
- 👤 Hideo Fukutani
- 👤 Konoe Miura
- 👤 Chihiro Eguchi
- 👤 Yoshihiro Takahashi
- 👤 Kazuo Torige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:26
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C07; C07C; C07C49/00; C07C49/587; C07C49/687; C07C49/697; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/128
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
40 words
A photosensitive composition, which consists essentially of: a photosensitive resin containing pendant cinnamic acid radicals, and from 0.01 - 10% by weight of a sensitizer of a nuclear-chloro substituted benzanthrone or a nuclear-fluoro substituted benzanthrone based on the photosensitive resin.
Claim 2
Dependent Claim
40 words
A photosensitive composition, which consists essentially of: a photosensitive resin containing pendant cinnamic acid radicals, and from 0.01 - 10% by weight of a sensitizer of a nuclear-chloro substituted benzanthrone or a nuclear-fluoro substituted benzanthrone based on the photosensitive resin.
Claim 3
Dependent Claim
17 words
The photosensitive composition of claim 1, wherein the nuclear-chloro substituted benzanthrone sensitizer is a monochlorobenzanthrone or dichlorobenzanthrone.
Claim 4
Dependent Claim
13 words
The photosensitive composition of claim 2, wherein said monochlorobenzanthrone is 3-chlorobenzanthrone or 9-chlorobenzanthrone.
Claim 5
Dependent Claim
13 words
The photosensitive composition of claim 2, wherein said dichlorobenzanthrone is 3,4-dichlorobenzanthrone or 6,11-dichlorobenzanthrone.
Claim 6
Dependent Claim
17 words
The photosensitive composition of claim 1, wherein said nuclear-fluoro substituted benzanthrone is 3-fluorobenzanthrone, 3,6-difluorobenzanthrone, 6,11-difluorobenzanthrone or 8,11-difluorobenzanthrone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |