US2732301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chxcxch
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/109; Y10S430/154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PHOTOMECHANICAL RESIST COMPOSITION COMPRISING AS A COMBINED CARRIER AND LIGHT-SENSITIVE MATERIAL AN ORGANIC SOLVENT SOLUBLE POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF CINNAMIC ACID ESTERS OF POLYVINYL ALCOHOL, CINNAMIC ACID ESTERS OF CELLULOSE, CINNAMIC ACID ESTERS OF HYDROXYALKYL-CELLULOSE, BENZAL - AR - VINYLACETOPHENONE POLYMERS, AND CINNAMALVINYL KETONE POLYMERS, AND AS A LIGHT-SENSITIZING AGENT FOR THE POLYMERIC MATERIAL A MEMBER OF THE CLASS CONSISTING OF (1) COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
72 words
A PHOTOMECHANICAL RESIST COMPOSITION COMPRISING AS A COMBINED CARRIER AND LIGHT-SENSITIVE MATERIAL AN ORGANIC SOLVENT SOLUBLE POLYMERIC MATERIAL SELECTED FROM THE CLASS CONSISTING OF CINNAMIC ACID ESTERS OF POLYVINYL ALCOHOL, CINNAMIC ACID ESTERS OF CELLULOSE, CINNAMIC ACID ESTERS OF HYDROXYALKYL-CELLULOSE, BENZAL - AR - VINYLACETOPHENONE POLYMERS, AND CINNAMALVINYL KETONE POLYMERS, AND AS A LIGHT-SENSITIZING AGENT FOR THE POLYMERIC MATERIAL A MEMBER OF THE CLASS CONSISTING OF (1) COMPOUNDS HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US1587274A
Cited
US2091715A
Cited
GB512914A
Cited
US2218230A
Cited
US2226158A
Cited
GB573798A
Cited
US2610120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |