US4063953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1975-12-03
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Granted: 1977-12-20
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Expires: 1995-12-03
Abstract
Abstract A photosensitive composition is prepared from a mixture of a photosensitive resin containing radicals having the formula ##STR1## wherein X and Y represent hydrogen, halogen, cyano or nitro, Ar represents an aryl radical or a substituted aryl radical, and n represents 1 or 2, and a solvent having the formula ##STR2## wherein R and R" represent a lower alkyl radical and R' represents a lower alkylene radical.
Inventors
- 👤 Hideo Fukutani
- 👤 Konoe Miura
- 👤 Yoshihiro Takahashi
- 👤 Kazuo Torige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:07
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08G; C08G81/00; C08G81/02; C08G81/024; C08G81/025; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/111
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
A photosensitive composition which consists essentially of: a photosensitive amount of a photosensitive resin containing units of the formulas: ##STR8## wherein Ar is phenyl in an amount of 4-methoxy-4-methylpentanone -2, 4-ethoxy-butanone-2 or 4-ethoxy-4-methylpentanone-2 sufficient to dissolve said photosensitive resin, to maintain an acceptable sensitivity of said composition, to stabilize said resin upon storage and to permit a uniform thin membrane to form when said composition is coated.
Claim 2
Dependent Claim
67 words
A photosensitive composition which consists essentially of: a photosensitive amount of a photosensitive resin containing units of the formulas: ##STR8## wherein Ar is phenyl in an amount of 4-methoxy-4-methylpentanone -2, 4-ethoxy-butanone-2 or 4-ethoxy-4-methylpentanone-2 sufficient to dissolve said photosensitive resin, to maintain an acceptable sensitivity of said composition, to stabilize said resin upon storage and to permit a uniform thin membrane to form when said composition is coated.
Claim 3
Dependent Claim
18 words
The photosensitive composition of claim 1 which can be used as a photoresist or for photographic printing plates.
Claim 4
Dependent Claim
13 words
The photosensitive composition of claim 1, which further consists essentially of a sensitizer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |