US3241483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrostatic screen printing
Assignee: OI Glass Inc
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Filing: 1963-06-17
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Granted: 1966-03-22
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Duff Richard Dwight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:40
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/12; B41M1/125; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF ELECTROSTATICALLY PRINGINT A HEATED GLASS SURFACE COMPRISING THE STEPS OF LOCATING A SUPPLY OF PRINTING POWDER BENEATH AN ELECTRICALLY CONDUCTIVE STENCIL HAVING OPENINGS THEREIN DEFINING THE IMAGE TO BE PRINTED, MECHANICALLY PRESSING THE SUPPLY AND LOWER SIDE OF THE STENCIL AGAINST EACH OTHER TO EXPRESS A PREDETERMINED AMOUNT OF POWDER UPWARDLY THROUGH SAID OPENINGS TO FORM AN IMAGE-SHAPED LAYER OF POWDER OF SUBSTANTIALLY UNIFORM THICKNESS PROJECTING ABOVE THE UPPER SIDE OF SAID STENCIL, APPLYING AN ELECTRIC POTENTIAL BETWEEN AN HEATED ARTICLE TO BE PRINTED AND SAID STENCIL, AND BRINGING THE HEATED AND ELECTRICALLY CHARGED ARTICLE SURFACE TO BE PRINTED INTO SPACED VERTICAL REGISTRY ABOVE THE EXPRESSED LAYER OF POWDER WHILE MAINTAINING THE STENCIL PRESSED AGAIST THE POWER SUPPLY.
Claim 2
Independent Claim
121 words
THE METHOD OF ELECTROSTATICALLY PRINGINT A HEATED GLASS SURFACE COMPRISING THE STEPS OF LOCATING A SUPPLY OF PRINTING POWDER BENEATH AN ELECTRICALLY CONDUCTIVE STENCIL HAVING OPENINGS THEREIN DEFINING THE IMAGE TO BE PRINTED, MECHANICALLY PRESSING THE SUPPLY AND LOWER SIDE OF THE STENCIL AGAINST EACH OTHER TO EXPRESS A PREDETERMINED AMOUNT OF POWDER UPWARDLY THROUGH SAID OPENINGS TO FORM AN IMAGE-SHAPED LAYER OF POWDER OF SUBSTANTIALLY UNIFORM THICKNESS PROJECTING ABOVE THE UPPER SIDE OF SAID STENCIL, APPLYING AN ELECTRIC POTENTIAL BETWEEN AN HEATED ARTICLE TO BE PRINTED AND SAID STENCIL, AND BRINGING THE HEATED AND ELECTRICALLY CHARGED ARTICLE SURFACE TO BE PRINTED INTO SPACED VERTICAL REGISTRY ABOVE THE EXPRESSED LAYER OF POWDER WHILE MAINTAINING THE STENCIL PRESSED AGAIST THE POWER SUPPLY.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |