US3293097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a dampening roll cover for use in lithographic printing
Assignee: 3M Co
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Filing: 1965-03-01
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Granted: 1966-12-20
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Peterson
- 👤 Leonard W Sachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:35
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/04; B41N2207/00; B41N2207/02; B41N2207/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR PREPARING A SEAMLESS, POROUS HYDROSCOPIC, COHESIVE NON-WOVEN CYLINDRICAL SLEEVE WHICH COMPRISES: (1) WRAPPING A MANDREL WITH MULTIPLE TURNS OF A NONWOVEN WEB CONTAINING HYDROPHILIC, RANDOMLY DISPOSED FIBERS WHICH (A) ARE SUBSTANTIALLY WATER INSOLUBLE AT TEMPERATURE BELOW ABOUT 100*F., (B) CAN BE LONGITUDINALLY EXPANDED WHEN WATER WETTED, (C) HAVE DIMENSIONAL STABILITY IN THE DRY EXPANDED STATE, (D) LONGITUDINALLY CONTRACT FROM THE EXPANDED STATE WHEN WETTED WITH WATER AT REMOVE TEMPERATURE, (2) RADIALLY COMPRESSING SAID MULTIPLE TURNS OF NONWOVEN WEB UNDER HEAT AND PRESSURE IN THE PRESENCE OF MOISTURE TO COMPACT SAID MULTIPLE TURNS AND TO COHERE THE FIBERS TO EACH OTHER WITHOUT DESTRUCTION OF THE ESSENTIALLY FIBROUS CHARACTER OF SAID WEB, FORMING A CLINDRICAL SLEEVE, (3) EXPANDING SAID SLEEVE RADIALLY WHILE IN WATER WETTED CONDITION TO INCREASE THE DIAMETER THEREOF, AND (4) DRYING SAID SLEEVE IN ITS EXPANDED CONDITION TO IMPART DIMENSIONAL STABILITY THERETO.
Claim 2
Dependent Claim
146 words
A PROCESS FOR PREPARING A SEAMLESS, POROUS HYDROSCOPIC, COHESIVE NON-WOVEN CYLINDRICAL SLEEVE WHICH COMPRISES: (1) WRAPPING A MANDREL WITH MULTIPLE TURNS OF A NONWOVEN WEB CONTAINING HYDROPHILIC, RANDOMLY DISPOSED FIBERS WHICH (A) ARE SUBSTANTIALLY WATER INSOLUBLE AT TEMPERATURE BELOW ABOUT 100*F., (B) CAN BE LONGITUDINALLY EXPANDED WHEN WATER WETTED, (C) HAVE DIMENSIONAL STABILITY IN THE DRY EXPANDED STATE, (D) LONGITUDINALLY CONTRACT FROM THE EXPANDED STATE WHEN WETTED WITH WATER AT REMOVE TEMPERATURE, (2) RADIALLY COMPRESSING SAID MULTIPLE TURNS OF NONWOVEN WEB UNDER HEAT AND PRESSURE IN THE PRESENCE OF MOISTURE TO COMPACT SAID MULTIPLE TURNS AND TO COHERE THE FIBERS TO EACH OTHER WITHOUT DESTRUCTION OF THE ESSENTIALLY FIBROUS CHARACTER OF SAID WEB, FORMING A CLINDRICAL SLEEVE, (3) EXPANDING SAID SLEEVE RADIALLY WHILE IN WATER WETTED CONDITION TO INCREASE THE DIAMETER THEREOF, AND (4) DRYING SAID SLEEVE IN ITS EXPANDED CONDITION TO IMPART DIMENSIONAL STABILITY THERETO.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |