Patent US4776298A successfully refreshed from Google Patents.
US4776298A
Expired / Lapsed
US
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Apparatus for performing a plasma enhanced chemical vapor deposition on an edge of a polycarbonate sheet
Assignee: General Electric Co
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Filing: 1987-04-27
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Granted: 1988-10-11
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Expires: 2007-04-27
Abstract
Abstract Apparatus for performing a plasma enhanced chemical vapor deposition on an edge of a polycarbonate sheet includes a conduit having an axially disposed slit therethrough for engaging the sheet so as to position the edge in the conduit. Axially disposed electrodes are attached to the conduit and positioned to be on generally opposite sides of the edge. Means are provided for applying a separate electrical potential to each of the electrodes, and at least one aperture is provided in the conduit for introducing and removing a gas therefrom.
Inventors
- 👤 Herman F. Nied
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:05
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/44; C23C16/50; C23C16/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
87 words
Apparatus for performing plasma enhanced chemical vapor deposition on the edge of a polycarbonate sheet comprising: a conduit having an axial slit for engaging the sheet of polycarbonate and positioning said sheet edge inside of said conduit; a pair of separate electrodes are attached to said conduit and positioned to be disposed on generally opposite sides said polycarbonate sheet edge; means for applying a separate electrical potential to each of the electrodes; and said conduit defining at least one aperture for introducing and removing a gas therefrom.
Claim 2
Dependent Claim
87 words
Apparatus for performing plasma enhanced chemical vapor deposition on the edge of a polycarbonate sheet comprising: a conduit having an axial slit for engaging the sheet of polycarbonate and positioning said sheet edge inside of said conduit; a pair of separate electrodes are attached to said conduit and positioned to be disposed on generally opposite sides said polycarbonate sheet edge; means for applying a separate electrical potential to each of the electrodes; and said conduit defining at least one aperture for introducing and removing a gas therefrom.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein each of said electrodes comprises a strip of metal foil disposed axially on said conduit.
Claim 4
Dependent Claim
25 words
The apparatus of claim 2 wherein said potential applying means includes at least on separate electrical conductor disposed in contact with each of said electrodes.
Claim 5
Dependent Claim
17 words
The apparatus of claim 2 wherein said electrodes are disposed on the inner surface of said conduit.
Claim 6
Dependent Claim
17 words
The apparatus of claim 2 wherein said electrodes are disposed on the outer surface of said conduit.
Claim 7
Dependent Claim
14 words
The apparatus of claim 2 wherein said conduit has a generally circular cross-sectional shape.
Claim 8
Dependent Claim
14 words
The apparatus of claim 2 wherein said conduit has a generally rectangular cross-sectional shape.
Claim 9
Dependent Claim
14 words
The apparatus of claim 2 wherein said conduit has a generally elliptical cross-sectional shape.
Claim 10
Dependent Claim
12 words
The apparatus of claim 2 wherein said conduit comprises a flexible material.
Claim 11
Dependent Claim
13 words
The apparatus of claim 9 wherein said conduit comprises rubber or silicon plastic.
Claim 12
Dependent Claim
13 words
The apparatus of claim 2 wherein said conduit comprises a substantially rigid material.
Claim 13
Dependent Claim
11 words
The apparatus of claim 11 wherein said conduit comprises a plastic.
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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |