Patent US3217641A successfully refreshed from Google Patents.
US3217641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic printing plate method and product
Assignee: Individual
•
Filing: 1963-04-24
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Granted: 1965-11-16
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Expires: 1983-04-24
Abstract
No abstract record available.
Inventors
- 👤 Goffredo Daniel Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:00
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
THE METHOD OF MAKING A HARD SURFACED PRINTING PLATE BY FORMING A LIQUID SYNTHETIC RESIN WITH MAGNETIC ATTRACTABLE POWDER OF NOT GREATER THAN ABOUT 100 MESH PARTICLE SIZE DISPERSED IN IT, CASTING THE LIQUID RESIN COMPOSITION AGAINST A PRINTING MATRIX, APPLYING MAGNETIC FORCE FROM THE OTHER SIDE OF THE MATRIX TO CAUSE THE MAGNETIC ATTRACTABLE POWDER TO MIGRATE TOWARDS THE PRINTING SURFACE AND TO BECOME PREDOMINANTLY CONCENTRATED AT THE PRINTING SURFACE, AND THEN SOLIDIFYING THE LIQUID RESIN TO PRODUCE A PRINTING PLATE WITH A SURFACE STRATUM CONTAINING THE MAGNETIC ATTRACTABLE POWDER AND A SOFTER BODY PORTION.
Claim 2
Independent Claim
96 words
THE METHOD OF MAKING A HARD SURFACED PRINTING PLATE BY FORMING A LIQUID SYNTHETIC RESIN WITH MAGNETIC ATTRACTABLE POWDER OF NOT GREATER THAN ABOUT 100 MESH PARTICLE SIZE DISPERSED IN IT, CASTING THE LIQUID RESIN COMPOSITION AGAINST A PRINTING MATRIX, APPLYING MAGNETIC FORCE FROM THE OTHER SIDE OF THE MATRIX TO CAUSE THE MAGNETIC ATTRACTABLE POWDER TO MIGRATE TOWARDS THE PRINTING SURFACE AND TO BECOME PREDOMINANTLY CONCENTRATED AT THE PRINTING SURFACE, AND THEN SOLIDIFYING THE LIQUID RESIN TO PRODUCE A PRINTING PLATE WITH A SURFACE STRATUM CONTAINING THE MAGNETIC ATTRACTABLE POWDER AND A SOFTER BODY PORTION.
Claim 3
Dependent Claim
11 words
THE PRINTING PLATE FORMED BY THE METHOD ACCORDING TO CLAIM 1.
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |