US3141407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Half-tone printing members and method for making same
Assignee: SC Johnson and Son Inc
•
Filing: 1960-02-01
•
Granted: 1964-07-21
•
Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Harry R Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:57
CPC Classifications
B; B41; B41C; B41C3/00; B41C3/06; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF MAKING A PRINTING MEMBER CAPABLE OF PRODUCING A HALF-TONE IMPRINT WHICH COMPRISES SURFACING A NEGATIVE MOLD HAVING A PRINTING SURFACE IN HALF-TONE RELIEF WITH A PLASTISOL WITHOUT THE USE OF PRESSURE, VACUUM, OR WETTING AGENTS, SAID PLASTISOL COMPRISING (A) FROM ABOUT 15% TO ABOUT 65% BY WEIGHT OF A THERMOPLASTIC RESIN POWDER AND (B) FROM ABOUT 35% TO ABOUT 85% BY WEIGHT OF A PLASTICIZER FOR THE RESIN AND A COLOR CARRYING LIQUID WHICH IS A NONSOLVENT FOR THE RESIN, THE PLASTICIZER OF (B) BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST ABOUT 5% BY WEIGHT OF SAID PLASTISOL; AND HEATING SAID PLASTISOL TO A TEMPERATURE SUFFICIENT TO FORM A MICROPOROUS RESIN HAVING A HALF-TONE PRINTING SURFACE, SAID MICROPOROUS RESIN HAVING PORES EXTENDING THROUGHOUT THE HALF-TONE PRINTING SURFACE AND COMMUNICATING WITH THE INTERIOR OF SAID MICROPOROUS RESIN, THE PORES OF SAID MICROPOROUS RESIN HAVING DISPOSED THEREIN A PRINTING FLUID COMPRISING SAID COLOR CARRYING LIQUID.
Claim 2
Independent Claim
158 words
A METHOD OF MAKING A PRINTING MEMBER CAPABLE OF PRODUCING A HALF-TONE IMPRINT WHICH COMPRISES SURFACING A NEGATIVE MOLD HAVING A PRINTING SURFACE IN HALF-TONE RELIEF WITH A PLASTISOL WITHOUT THE USE OF PRESSURE, VACUUM, OR WETTING AGENTS, SAID PLASTISOL COMPRISING (A) FROM ABOUT 15% TO ABOUT 65% BY WEIGHT OF A THERMOPLASTIC RESIN POWDER AND (B) FROM ABOUT 35% TO ABOUT 85% BY WEIGHT OF A PLASTICIZER FOR THE RESIN AND A COLOR CARRYING LIQUID WHICH IS A NONSOLVENT FOR THE RESIN, THE PLASTICIZER OF (B) BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST ABOUT 5% BY WEIGHT OF SAID PLASTISOL; AND HEATING SAID PLASTISOL TO A TEMPERATURE SUFFICIENT TO FORM A MICROPOROUS RESIN HAVING A HALF-TONE PRINTING SURFACE, SAID MICROPOROUS RESIN HAVING PORES EXTENDING THROUGHOUT THE HALF-TONE PRINTING SURFACE AND COMMUNICATING WITH THE INTERIOR OF SAID MICROPOROUS RESIN, THE PORES OF SAID MICROPOROUS RESIN HAVING DISPOSED THEREIN A PRINTING FLUID COMPRISING SAID COLOR CARRYING LIQUID.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |