US2865750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photomechanical reproduction
Assignee: Eastman Kodak Co
•
Filing: 1955-03-18
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Granted: 1958-12-23
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Expires: 1975-03-18
Abstract
No abstract record available.
Inventors
- 👤 Donald J Trevoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD OF FORMING A PHOTOGRAPHIC RESIST ELEMENT HAVING A BASE OF STAINLESS STEEL CONTAINING CHROMIUM AND NICKEL AND HAVING THEREON A PHOTOGRAPHIC RESIST COMPRISING A LIGHT-SENSITIVE POLYMERIC MATERIAL CONSISTING OF A CINNAMIC ACID ESTER OF POLYVINYL ALCOHOL AS A COMBINED CARRIER AND LIGHT SENSITIVE MATERIAL AND CONTAINING A LIGHT SENSITIZING AGENT, WHICH COMPRISES OXIDIZING THE SURFACE OF THE STAINLESS STEEL IN AIR AT A TEMPERATURE OF 500950*C. FOR 2 TO 3 MINUTES TO FORM AN OXIDE LAYER THEREON, COOLING THE STAINLESS STEEL, AND COATING SAID PHOTOGRAPHIC RESIST THEREON.
Claim 2
Independent Claim
89 words
THE METHOD OF FORMING A PHOTOGRAPHIC RESIST ELEMENT HAVING A BASE OF STAINLESS STEEL CONTAINING CHROMIUM AND NICKEL AND HAVING THEREON A PHOTOGRAPHIC RESIST COMPRISING A LIGHT-SENSITIVE POLYMERIC MATERIAL CONSISTING OF A CINNAMIC ACID ESTER OF POLYVINYL ALCOHOL AS A COMBINED CARRIER AND LIGHT SENSITIVE MATERIAL AND CONTAINING A LIGHT SENSITIZING AGENT, WHICH COMPRISES OXIDIZING THE SURFACE OF THE STAINLESS STEEL IN AIR AT A TEMPERATURE OF 500950*C. FOR 2 TO 3 MINUTES TO FORM AN OXIDE LAYER THEREON, COOLING THE STAINLESS STEEL, AND COATING SAID PHOTOGRAPHIC RESIST THEREON.
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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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |