Patent US2907273A successfully refreshed from Google Patents.
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 21:26
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.
References Cited (Backward Citations)
US758599A
Cited
US773368A
Cited
US1042827A
Cited
US1163166A
Cited
US1069856A
Cited
GB330674A
Cited
US2042003A
Cited
US2437005A
Cited
US2427107A
Cited
GB629201A
Cited
US2623847A
Cited
US2599914A
Cited
US2676886A
Cited
US2750881A
Cited
US2703295A
Cited
US2686756A
Cited
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 |