Patent US3087423A successfully refreshed from Google Patents.
US3087423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing plate
Assignee: Tenak Products Co
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Filing: 1960-12-12
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Granted: 1963-04-30
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Libberton Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:53
CPC Classifications
B; B41; B41C; B41C3/00; B41C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF MAKING AN ELECTROTYPE PRINTING PLATE WHICH COMPRISES THE STEPS OF APPLYING A LAYER OF A POWDERED MATERIAL COMPRISING A VINYL RESIN BASE TO THE BACK OF AN ELECTROTYPE SHELL IN A QUANTITY SUFFICIENT TO FILL UP THE RECESSES THEREIN AND COVER THE SURFACE OF THE SHELL, SAID POWERED MATERIAL INCLUDING AN AMOUNT OF WOOD FLOUR EQUAL TO AT LEAST ABOUT 5% TO THE TOTAL WEIGHT OF THE POWDER, HEATING THE SAID POWDER SO APPLIED TO COALESCE THE PARTICLES THEREIN AND MOLDING A SHEET OF RESINOUS MATERIAL AGAINST SAID LAYER AT A TEMPERATURE AND UNDER A PRESSURE WHICH UNITES SAID SHEET AND COALESCED LAYER AND CONFORMS SAID UNITED MATERIAL THROUGHOUT TO THE REAR FACE OF SAID SHELL, THE SAID SHEET COMPRISING A VINYL RESIN BASE AND INCLUDING AN AMOUNT OF WOOD FLOUR EQUAL TO AT LEAST ABOUT 5% OF THE TOTAL WEIGHT OF THE SHEET.
Claim 2
Independent Claim
147 words
A METHOD OF MAKING AN ELECTROTYPE PRINTING PLATE WHICH COMPRISES THE STEPS OF APPLYING A LAYER OF A POWDERED MATERIAL COMPRISING A VINYL RESIN BASE TO THE BACK OF AN ELECTROTYPE SHELL IN A QUANTITY SUFFICIENT TO FILL UP THE RECESSES THEREIN AND COVER THE SURFACE OF THE SHELL, SAID POWERED MATERIAL INCLUDING AN AMOUNT OF WOOD FLOUR EQUAL TO AT LEAST ABOUT 5% TO THE TOTAL WEIGHT OF THE POWDER, HEATING THE SAID POWDER SO APPLIED TO COALESCE THE PARTICLES THEREIN AND MOLDING A SHEET OF RESINOUS MATERIAL AGAINST SAID LAYER AT A TEMPERATURE AND UNDER A PRESSURE WHICH UNITES SAID SHEET AND COALESCED LAYER AND CONFORMS SAID UNITED MATERIAL THROUGHOUT TO THE REAR FACE OF SAID SHELL, THE SAID SHEET COMPRISING A VINYL RESIN BASE AND INCLUDING AN AMOUNT OF WOOD FLOUR EQUAL TO AT LEAST ABOUT 5% OF THE TOTAL WEIGHT OF THE SHEET.
References Cited (Backward Citations)
US1379430A
Cited
US2558269A
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US2632722A
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US2638845A
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US2581718A
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US2703051A
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US2814990A
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US2910351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |