US2907273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic plates
Assignee: Chrome Steel Plate Corp
•
Filing: 1954-05-03
•
Granted: 1959-10-06
•
Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 Charles F Geese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:38
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40; B; B21; B21C; B21C1/00; B21C1/02; B21C1/04; B21C1/08; Y; Y10; Y10S; Y10S205/00; Y10S205/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A LITHOGRAPHIC PRINTING PLATE HAVING IMAGE AREAS AND NON-IMAGE AREAS WHICH COMPRISES A LOW-CARBON NONSTAINLESS STEEL PLATE, THE NON-IMAGE AREAS OF SAID PLATE CONTAINING AN OVERLYING COATING OF DULL HYDROPHILIC INKREPELLENT CHROMIUM, THE IMAGE AREAS OF SAID PLATE BEING RECESSED RELATIVE TO SAID CHROMIUM COATING, SAID IMAGE AREAS BEING IN A SENSITIZED HYDROPHOBIC INK-RECPTIVE STATE AND BEING COMPRISED OF THE REACTION PRODUCT OF SAID STEEL WITH A SOLUTION OF AMMONIUM CHLORIDE, FERRIC CHLORIDE, CURPIC CHLORIDE AND BISMUTH OXYCHLORIDE.
Claim 2
Dependent Claim
78 words
A LITHOGRAPHIC PRINTING PLATE HAVING IMAGE AREAS AND NON-IMAGE AREAS WHICH COMPRISES A LOW-CARBON NONSTAINLESS STEEL PLATE, THE NON-IMAGE AREAS OF SAID PLATE CONTAINING AN OVERLYING COATING OF DULL HYDROPHILIC INKREPELLENT CHROMIUM, THE IMAGE AREAS OF SAID PLATE BEING RECESSED RELATIVE TO SAID CHROMIUM COATING, SAID IMAGE AREAS BEING IN A SENSITIZED HYDROPHOBIC INK-RECPTIVE STATE AND BEING COMPRISED OF THE REACTION PRODUCT OF SAID STEEL WITH A SOLUTION OF AMMONIUM CHLORIDE, FERRIC CHLORIDE, CURPIC CHLORIDE AND BISMUTH OXYCHLORIDE.
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |