US3177104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making printing cylinders
Assignee: Mark Steel Stamp Corp
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Filing: 1961-08-01
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Granted: 1965-04-06
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Expires: 1981-08-01
Abstract
No abstract record available.
Inventors
- 👤 Seward S Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:20
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/18; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T29/49; Y10T29/49544; Y10T29/4956
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF FORMING A PRINTING CYLINDER HAVING RAISED PRINTING CHARACTERS, COMRISING FILLING RECESSES IN A CYLINDRICAL DIE WITH ETCH RESIST, SAID RECESSES BEING BOUNDED BY STEEPLY INWARDLY CONVERGING SIDES SUBSTANTIALLY INCLINED FROM THE RADIAL DIRECTION: ROTATING SAID DIE IN REGISTRATION WITH THE SURFACE OF A CYLINDRICAL WORKPIECE TO APPLY ETCH RESIST THERETO IN THE AREAS OF AND SURROUNDING THE FACES OF THE CHARACTERS TO BE FORMED; ETCHING AWAY THE SURFACE MATERIAL OF SAID WORKPIECE ONLY OUTSIDE THE AREAS OF THE APPLIED RESIST TO FORM CHARACTER CORES HAVING GREATER TRANSVERSE DIMENSIONS THAN THE FULL CHARACTERS TO BE FORMED; CLEANING THE RESIST FROM THE RECESES OF SAID DIE CYLINDER; ROTATING SAID WORKPIECE IN REGISTRATION WITH SAID DIE CYLINDER, WITH THE CORES RECEIVED IN SAID RECESSES AND INTERFERING WITH THE SIDES THEREOF, WHILE RELATIVELY DISPLACING SAID DIE AND SAID WORKPIECE TO APPLY PRESSURE THEREBETWEEN, THUS PRODUCING COLD FLOW OF
Claim 2
Independent Claim
147 words
THE METHOD OF FORMING A PRINTING CYLINDER HAVING RAISED PRINTING CHARACTERS, COMRISING FILLING RECESSES IN A CYLINDRICAL DIE WITH ETCH RESIST, SAID RECESSES BEING BOUNDED BY STEEPLY INWARDLY CONVERGING SIDES SUBSTANTIALLY INCLINED FROM THE RADIAL DIRECTION: ROTATING SAID DIE IN REGISTRATION WITH THE SURFACE OF A CYLINDRICAL WORKPIECE TO APPLY ETCH RESIST THERETO IN THE AREAS OF AND SURROUNDING THE FACES OF THE CHARACTERS TO BE FORMED; ETCHING AWAY THE SURFACE MATERIAL OF SAID WORKPIECE ONLY OUTSIDE THE AREAS OF THE APPLIED RESIST TO FORM CHARACTER CORES HAVING GREATER TRANSVERSE DIMENSIONS THAN THE FULL CHARACTERS TO BE FORMED; CLEANING THE RESIST FROM THE RECESES OF SAID DIE CYLINDER; ROTATING SAID WORKPIECE IN REGISTRATION WITH SAID DIE CYLINDER, WITH THE CORES RECEIVED IN SAID RECESSES AND INTERFERING WITH THE SIDES THEREOF, WHILE RELATIVELY DISPLACING SAID DIE AND SAID WORKPIECE TO APPLY PRESSURE THEREBETWEEN, THUS PRODUCING COLD FLOW OF
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |