Patent US2536323A successfully refreshed from Google Patents.
US2536323A
Expired / Lapsed
US
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Polyvinyl chloride printing roller
Assignee: Perma-Flex Ind Ltd
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Filing: 1947-03-18
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Granted: 1951-01-02
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Expires: 1967-03-18
Abstract
No abstract record available.
Inventors
- 👤 Spencer James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:28
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/06; C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; B41N2207/00; B41N2207/02; Y; Y10; Y10S; Y10S118/00; Y10S118/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PRINTING ROLLER HAVING A CORE AND A FIXED SURROUND ON THE SURFACE WHEREOF IS FORMED A CYLINDRICAL INKING SURFACE COAXIAL TO SAID CORE, SAID SURROUND BEING COMPOSED OF A HOMOGENEOUS COMPOSITION CONSISTING ESSENTIALLY OF RUBBERY PLASTICISED POLYVINYL CHLORIDE CONTAINING FROM ABOUT 1 TO ABOUT 5* BY WEIGHT OF COMPATIBLE ESTER GUM.
Claim 2
Dependent Claim
52 words
A PRINTING ROLLER HAVING A CORE AND A FIXED SURROUND ON THE SURFACE WHEREOF IS FORMED A CYLINDRICAL INKING SURFACE COAXIAL TO SAID CORE, SAID SURROUND BEING COMPOSED OF A HOMOGENEOUS COMPOSITION CONSISTING ESSENTIALLY OF RUBBERY PLASTICISED POLYVINYL CHLORIDE CONTAINING FROM ABOUT 1 TO ABOUT 5* BY WEIGHT OF COMPATIBLE ESTER GUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |