US3377949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing plates
Assignee: WR Grace and Co
•
Filing: 1966-03-28
•
Granted: 1968-04-16
•
Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Roy W Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PRINTING PLATE COMPRISING IN SEQUENCE A POLYMERIC PRINTING LAYER, A BARRIER LAYER AND A VOLUME-COMPRESSIBLE, RESILIENT MEMBER ADHERED TO SAID LAYER, SAID MEMBER COMPRISING A POROUS, FIBROUS WEB IMPREGNATED WITH AN ELASTOMERIC MATERIAL WHEREIN SAID MEMBER HAS A FIRMNESS SUCH THAT A PRESSURE OF AT LEAST ABOUT 10 POUNDS PER SQUARE INCH MUCH BE EXERTED ON THE MATERIAL TO EFFECT AN INITIAL COMPRESSION OF 2 MILS, AND A RESIDUAL POROSITY AT 4 MILS COMPRESSION OF AT LEAST ABOUT 37%, SAID BARRIER LAYER ADAPTED TO PREVENT SAID PRINTING LAYER FROM STRIKING INTO SAID MEMBER.
Claim 2
Dependent Claim
94 words
A PRINTING PLATE COMPRISING IN SEQUENCE A POLYMERIC PRINTING LAYER, A BARRIER LAYER AND A VOLUME-COMPRESSIBLE, RESILIENT MEMBER ADHERED TO SAID LAYER, SAID MEMBER COMPRISING A POROUS, FIBROUS WEB IMPREGNATED WITH AN ELASTOMERIC MATERIAL WHEREIN SAID MEMBER HAS A FIRMNESS SUCH THAT A PRESSURE OF AT LEAST ABOUT 10 POUNDS PER SQUARE INCH MUCH BE EXERTED ON THE MATERIAL TO EFFECT AN INITIAL COMPRESSION OF 2 MILS, AND A RESIDUAL POROSITY AT 4 MILS COMPRESSION OF AT LEAST ABOUT 37%, SAID BARRIER LAYER ADAPTED TO PREVENT SAID PRINTING LAYER FROM STRIKING INTO SAID MEMBER.
References Cited (Backward Citations)
US3238086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |