US3707751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dampening roller having hydrophilic surface coating
Assignee: Mbt Corp
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Filing: 1971-06-09
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Granted: 1973-01-02
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Expires: 1991-06-09
Abstract
Abstract A method of improving the surface characteristics of plastics and elastomers which in its preferred aspects includes the steps of forming a bonding or coupling film on the surface of a plastic or elastomeric material and thereafter contacting the film with a compound or a mixture of compounds, or a solution thereof, capable of forming a deposit or coating of silica or silica gel thereon, and articles produced in accordance with the method.
Inventors
- 👤 R Misch
- 👤 D Daus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:04
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00865; B41; B41N; B41N7/00; B41N7/04; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/044; C08J7/046; B41N2207/00; B41N2207/02; B41N2207/10; B41N2207/14; C08J2483/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A dampening roller as claimed in claim 1 wherein the silica or silica gel deposit is the hydrolyzation product of a silicon halide having four halogen groups bonded to silicon or a silicic ester wherein the functional organic group is bonded to silicon through an oxygen atom and there is no direct carbon-silicon bond, said ester being capable of forming said deposit in the presence of a catalyst which acts as a Lewis acid in effecting hydrolysis of the silicic ester.
Claim 2
Dependent Claim
22 words
A roller as claimed in claim 2 wherein the silica or silica gel deposit contains a minor proportion of a colloidal silica.
References Cited (Backward Citations)
US2991204A
Cited
US3225419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |