US4257083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preserving pastel works of art
Assignee: Individual
•
Filing: 1979-10-22
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Granted: 1981-03-17
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Expires: 1999-10-22
Abstract
Abstract A process for preserving pastel works of art which comprises providing a flexible or rigid panel, attaching a multiplicity of conductors to the panel, interconnecting the conductors to form two groups insulated from one another, placing the pastel work to be preserved on the panel, and applying an electric potential across the two groups of conductors to establish an electrostatic field at the surface of the panel to attract the pastel particles (which have high dielectric properties) into the plane of the panel and to hold the pastel particles firmly in fixed positions on the surface of the paper or other medium which forms the substrate for the work of art.
Inventors
- 👤 Victoria S. Blyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:49
CPC Classifications
H; H02; H02N; H02N13/00; B; B44; B44D; B44D5/00; B44D7/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
110 words
A process for preserving pastel works of art which comprises the following steps: providing a panel having a multiplicity of conductors attached thereto interconnected to form two groups insulated from one another; placing the pastel work to be preserved on the panel; and applying and maintaining an electric potential across the two groups of conductors to establish an electrostatic field at the surface of the panel to attract the pastel particles of the work of art into the plane of the panel and to hold the pastel particles firmly in fixed positions on the surface of the paper or other medium which forms the substrate for the work of art.
Claim 2
Dependent Claim
110 words
A process for preserving pastel works of art which comprises the following steps: providing a panel having a multiplicity of conductors attached thereto interconnected to form two groups insulated from one another; placing the pastel work to be preserved on the panel; and applying and maintaining an electric potential across the two groups of conductors to establish an electrostatic field at the surface of the panel to attract the pastel particles of the work of art into the plane of the panel and to hold the pastel particles firmly in fixed positions on the surface of the paper or other medium which forms the substrate for the work of art.
Claim 3
Dependent Claim
49 words
The process defined in claim 1, and which includes the step of providing a transparent member across the pastel particles on the substrate, and by providing a frame mounting the transparent member to the panel to extend around the work of art and form a dustproof sealed chamber therefor.
References Cited (Backward Citations)
US3634740A
Cited
US3916270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |