US2670285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitization of polymeric cinnamic acid esters
Assignee: Eastman Kodak Co
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Filing: 1951-01-20
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Granted: 1954-02-23
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Expires: 1971-01-20
Abstract
No abstract record available.
Inventors
- 👤 Louis M Minsk
- 👤 Werter P Van Deusen
- 👤 Earl M Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; G03F7/038; G03F7/0388; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/112; Y10S430/114; Y10S430/124; Y10S430/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PHOTOMECHANICAL RESIST COMPOSITION COMPRISING A POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CINNAMIC ACID ESTERS OF POLYVINYL ALCOHOL AND CELLULOSE AS A COMBINED CARRIER AND LIGHT-SENSITIVE MATERIAL, AND AS A LIGHT-SENSITIZING AGENT FOR THE COMPOSITION, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTHRONES, BENZANTHRONES AND AZABENZANTHRONES, FREE OF BASIC NITROGEN-CONTAINING SUBSTITUENTS AND HYDROXYL IN A POSITION PERI TO AN OXO GROUP OF SAID COMPOUND, CARBOXYL AND SULFO GROUPS.
Claim 2
Dependent Claim
71 words
A PHOTOMECHANICAL RESIST COMPOSITION COMPRISING A POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CINNAMIC ACID ESTERS OF POLYVINYL ALCOHOL AND CELLULOSE AS A COMBINED CARRIER AND LIGHT-SENSITIVE MATERIAL, AND AS A LIGHT-SENSITIZING AGENT FOR THE COMPOSITION, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTHRONES, BENZANTHRONES AND AZABENZANTHRONES, FREE OF BASIC NITROGEN-CONTAINING SUBSTITUENTS AND HYDROXYL IN A POSITION PERI TO AN OXO GROUP OF SAID COMPOUND, CARBOXYL AND SULFO GROUPS.
References Cited (Backward Citations)
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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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |