Patent US3248332A successfully refreshed from Google Patents.
US3248332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of images from lithographic plates
Assignee: Polychrome Corp
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Filing: 1963-03-26
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Granted: 1966-04-26
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Gerald F O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:17
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF TRANSFORMING AN OLEOPHILIC IMAGE AREA ON THE SURFACE OF A LITHOGRAPHIC PLATE INTO A HYDROPHILIC NON-IMAGE AREA WHIHC COMPRISES APPLYING TO SAID IMAGE AREA TO SOFTEN IT A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 97.0% BY WEIGHT OF AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF BUTYL ACETATE, METHYL ETHYL KETONE AND CYCLOHEXANOL HAVING DISSOLVED THEREIN FROM ABOUT 0.3% BY WEIGHT OF A COMPOUND OF THE FORMULA H2XF6 WHEREIN X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND HAFNIUM, AND WIPING THE SOFTENED IMAGE AREA AND RESIDUAL MATERIALS FROM SAID PLATE.
Claim 2
Independent Claim
99 words
A METHOD OF TRANSFORMING AN OLEOPHILIC IMAGE AREA ON THE SURFACE OF A LITHOGRAPHIC PLATE INTO A HYDROPHILIC NON-IMAGE AREA WHIHC COMPRISES APPLYING TO SAID IMAGE AREA TO SOFTEN IT A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 97.0% BY WEIGHT OF AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF BUTYL ACETATE, METHYL ETHYL KETONE AND CYCLOHEXANOL HAVING DISSOLVED THEREIN FROM ABOUT 0.3% BY WEIGHT OF A COMPOUND OF THE FORMULA H2XF6 WHEREIN X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND HAFNIUM, AND WIPING THE SOFTENED IMAGE AREA AND RESIDUAL MATERIALS FROM SAID PLATE.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |