Patent DE500136C successfully refreshed from Google Patents.
Patent US3221654A successfully refreshed from Google Patents.
US3221654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic printing plate and method for manufacture
Assignee: Dynamics Corp of America
•
Filing: 1960-09-22
•
Granted: 1965-12-07
•
Expires: 1980-09-22
Abstract
No abstract record available.
Inventors
- 👤 Fred M Jernt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:30
CPC Classifications
B; B41; B41C; B41C3/00; B41C3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF PREPARING AN IMAGED PRINTING PLATE OF THERMOPLASTIC SHEET MATERIAL COMPRISING THE STEPS OF POSITIONING THE PLASTIC SHEET AND A POROUS MATRIX IN SPACED PARALLEL RELATION, INTRODUCING A HEATING MEANS IN BETWEEN THE SHEET AND MATRIX FOR PREHEATING THE OPPOSING SURFACE THEREOF, WITHDRAWING THE PREHEATING MEANS AND BRINGING THE PREHEATED TOGETHER INTO ABUTTING RELATIONSHIP, EXHAUSTING THE AIR THROUGH THE POROUS MATRIX FROM THE SIDE OPPOSITE THAT WHICH IS ENGAGED BY THE THERMOPLASTIC SHEET TO GENERATE A VACUM BETWEEN THE SAID SURFACES WHEREBY PLASTIC OF THE SHEET IS DEPRESSED INTO THE RECESSES OF THE IMAGE IN RELIEF IN THE POROUS MATRIX FOR EXACT CONFORMANCE TO REPODUCE THE IMAGE IN OFFSET IN THE SURFACE OF THE PLASTIC SHEET, AND SEPARATING THE IMAGED PLASTIC SHEET FROM THE POROUS MATRIX AFTER THE PLASTIC HAS SET.
Claim 2
Independent Claim
133 words
A METHOD OF PREPARING AN IMAGED PRINTING PLATE OF THERMOPLASTIC SHEET MATERIAL COMPRISING THE STEPS OF POSITIONING THE PLASTIC SHEET AND A POROUS MATRIX IN SPACED PARALLEL RELATION, INTRODUCING A HEATING MEANS IN BETWEEN THE SHEET AND MATRIX FOR PREHEATING THE OPPOSING SURFACE THEREOF, WITHDRAWING THE PREHEATING MEANS AND BRINGING THE PREHEATED TOGETHER INTO ABUTTING RELATIONSHIP, EXHAUSTING THE AIR THROUGH THE POROUS MATRIX FROM THE SIDE OPPOSITE THAT WHICH IS ENGAGED BY THE THERMOPLASTIC SHEET TO GENERATE A VACUM BETWEEN THE SAID SURFACES WHEREBY PLASTIC OF THE SHEET IS DEPRESSED INTO THE RECESSES OF THE IMAGE IN RELIEF IN THE POROUS MATRIX FOR EXACT CONFORMANCE TO REPODUCE THE IMAGE IN OFFSET IN THE SURFACE OF THE PLASTIC SHEET, AND SEPARATING THE IMAGED PLASTIC SHEET FROM THE POROUS MATRIX AFTER THE PLASTIC HAS SET.
References Cited (Backward Citations)
US912092A
Cited
US960006A
Cited
US1857842A
Cited
US1871568A
Cited
US1991009A
Cited
US2078535A
Cited
US2272254A
Cited
US2345112A
Cited
US2400518A
Cited
US2512940A
Cited
US2647284A
Cited
US2678510A
Cited
US2970540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |