US2647864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etching process
Assignee: Individual
•
Filing: 1952-05-29
•
Granted: 1953-08-04
•
Expires: 1972-05-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel L Goffredo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:12
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/18; B; B41; B41N; B41N1/00; B41N1/04; B41N1/08; B41N1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD OF MAKING ETCHED PLATES COMPRISING FORMING A RESIST IMAGE ON THE TOP MEMBER OF A BIMETALLIC PLATE, WHICH TOP MEMBER CONSISTS OF A METAL LOWER IN THE ELECTROMOTIVE FORCE SERIES OF METALS THAN THE BASE MEMBER, REMOVING THE TOP MEMBER OF THE BIMETALLIC PLATE UNDER THE NON-RESISTANT PORTIONS OF THE RESIST, AND THEN ETCHING THE EXPOSED PORTIONS OF THE BASE MEMBER OF THE PLATE TO PRODUCE A RELIEF IMAGE WITH A SOLUTION OF A SALT OF THE METAL OF THE TOP PORTION, WHEREBY METAL IS DEPOSITED FROM THE SOLUTION AND ADHERES TO THE EDGES OF THE ETCHED PITS AND PROTECTS THEM FROM UNDERCUTTING.
Claim 2
Independent Claim
105 words
A METHOD OF MAKING ETCHED PLATES COMPRISING FORMING A RESIST IMAGE ON THE TOP MEMBER OF A BIMETALLIC PLATE, WHICH TOP MEMBER CONSISTS OF A METAL LOWER IN THE ELECTROMOTIVE FORCE SERIES OF METALS THAN THE BASE MEMBER, REMOVING THE TOP MEMBER OF THE BIMETALLIC PLATE UNDER THE NON-RESISTANT PORTIONS OF THE RESIST, AND THEN ETCHING THE EXPOSED PORTIONS OF THE BASE MEMBER OF THE PLATE TO PRODUCE A RELIEF IMAGE WITH A SOLUTION OF A SALT OF THE METAL OF THE TOP PORTION, WHEREBY METAL IS DEPOSITED FROM THE SOLUTION AND ADHERES TO THE EDGES OF THE ETCHED PITS AND PROTECTS THEM FROM UNDERCUTTING.
References Cited (Backward Citations)
US2558504A
Cited
US2584317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |