US2631092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of etching plates
Assignee: International Business Machines Corp
•
Filing: 1950-12-15
•
Granted: 1953-03-10
•
Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Philip A Tatusko
- 👤 Jr Richard E Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:04
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/0017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF SELECTIVELY ETCHING A PLATE WHICH INCLUDES THE STEPS OF FORMING CHANNELS TO SEGRAGATE AREAS ON THE FACE OF A PLATE, COATING THE FACE OF SAID PLATE WITH A MOLDABLE RESIST MATERIAL, SELECTIVELY MOLDING SAID MATERIAL TO FORM WALLS OF RESIST BETWEEN SAID AREAS AND A COATING OF RESIST MERGING WITH THE ADJACENT WALLS OF RESIST, OVER THOSE AREAS WHICH ARE TO BE LEFT UNETCHED, SUBJECTING SAID PLATE TO THE ACTION OF AN ETCHING FLUID TO ETCH AWAY THE UNCOATED AREAS AND REMOVING THE RESIST MATERIAL FROM SAID PLATE.
Claim 2
Independent Claim
91 words
A METHOD OF SELECTIVELY ETCHING A PLATE WHICH INCLUDES THE STEPS OF FORMING CHANNELS TO SEGRAGATE AREAS ON THE FACE OF A PLATE, COATING THE FACE OF SAID PLATE WITH A MOLDABLE RESIST MATERIAL, SELECTIVELY MOLDING SAID MATERIAL TO FORM WALLS OF RESIST BETWEEN SAID AREAS AND A COATING OF RESIST MERGING WITH THE ADJACENT WALLS OF RESIST, OVER THOSE AREAS WHICH ARE TO BE LEFT UNETCHED, SUBJECTING SAID PLATE TO THE ACTION OF AN ETCHING FLUID TO ETCH AWAY THE UNCOATED AREAS AND REMOVING THE RESIST MATERIAL FROM SAID PLATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |