Patent US2538751A successfully refreshed from Google Patents.
US2538751A
Expired / Lapsed
US
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Inking roller manufacture
Assignee: Individual
•
Filing: 1948-04-01
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Granted: 1951-01-23
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Expires: 1968-04-01
Abstract
No abstract record available.
Inventors
- 👤 Edward D Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:46
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/06; B41N2207/00; B41N2207/02; B41N2207/14; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/298; Y10T428/31504; Y10T428/31725; Y10T428/31768
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF FORMING AN INKING ROLLER WHICH COMPRISES MIXING A POLYALKYLENE POLYSULPHIDE SYNTHETIC RESIN WITH AN EXTENDER SELECTED FROM THE GROUP CONSISTING OF DIBUTYL PHTHALATE, DIOCTYL PHTHALATE, DIHEXYL PHTHALATE AND TRICRESYL PHOSPHATE; A MISCIBLE ALDEHYDE REACTIVE WITH THE RESIN; AND A WEAK ACID SELECTED FROM THE GROUP CONSISTING OF FORMIC ACID, SALICYLIC ACID, AND FUROIC ACID; THE ALDEHYDE BEING PRESENT IN THE AMOUNT OF BETWEEN ABOUT 10% AND ABOUT 32%, LIQUEFYING THE MIXTURE BY WARMING THE SAME TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 100* F. TO ABOUT 200* F., APPLYING A LAYER OF SUCH LIQUID MIXTURE TO A GLUE-BASE ROLLER, AND FINALLY CURING THE RESIN AND BONDING THE SAME TO SAID GLUE BASE ROLLER.
Claim 2
Independent Claim
117 words
THE METHOD OF FORMING AN INKING ROLLER WHICH COMPRISES MIXING A POLYALKYLENE POLYSULPHIDE SYNTHETIC RESIN WITH AN EXTENDER SELECTED FROM THE GROUP CONSISTING OF DIBUTYL PHTHALATE, DIOCTYL PHTHALATE, DIHEXYL PHTHALATE AND TRICRESYL PHOSPHATE; A MISCIBLE ALDEHYDE REACTIVE WITH THE RESIN; AND A WEAK ACID SELECTED FROM THE GROUP CONSISTING OF FORMIC ACID, SALICYLIC ACID, AND FUROIC ACID; THE ALDEHYDE BEING PRESENT IN THE AMOUNT OF BETWEEN ABOUT 10% AND ABOUT 32%, LIQUEFYING THE MIXTURE BY WARMING THE SAME TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 100* F. TO ABOUT 200* F., APPLYING A LAYER OF SUCH LIQUID MIXTURE TO A GLUE-BASE ROLLER, AND FINALLY CURING THE RESIN AND BONDING THE SAME TO SAID GLUE BASE ROLLER.
References Cited (Backward Citations)
US294436A
Cited
US1098776A
Cited
US1239630A
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US1846810A
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US1963856A
Cited
US2204383A
Cited
US2195380A
Cited
US2304001A
Cited
US2271124A
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US2453735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |