US4012536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam recording medium comprising 1-methylvinyl methyl ketone
Assignee: RCA Corp
•
Filing: 1975-08-14
•
Granted: 1977-03-15
•
Expires: 1995-08-14
Abstract
Abstract Recording medium comprising a film of a polymer of 1-methylvinyl methyl ketone on a support is suitable for recording information with electron beams. This recording medium has high resolution and good sensitivity.
Inventors
- 👤 Aaron William Levine
- 👤 Michael Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:17
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/039; Y; Y10; Y10S; Y10S430/00; Y10S430/143
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
30 words
An electron beam recording medium which comprises a support, an electrically conductive layer and an electron beam-sensitive film thereon, said film consisting essentially of a polymer of 1-methylvinyl methyl ketone.
Claim 2
Dependent Claim
30 words
An electron beam recording medium which comprises a support, an electrically conductive layer and an electron beam-sensitive film thereon, said film consisting essentially of a polymer of 1-methylvinyl methyl ketone.
Claim 3
Dependent Claim
14 words
A medium according to claim 1 wherein the support has the conductive layer thereon.
Claim 4
Dependent Claim
15 words
A medium according to claim 1 having the conductive layer on the electron-beam sensitive film.
Claim 5
Dependent Claim
15 words
A medium according to claim 1 wherein the polymer is a 1-methylvinyl methyl ketone homopolymer.
Claim 6
Dependent Claim
22 words
A medium according to claim 1 wherein the polymer is a copolymer of 1-methylvinyl methyl ketone and a comonomer having vinyl unsaturation.
Claim 7
Dependent Claim
21 words
A medium according to claim 5 wherein the copolymer is derived from 1-methylvinyl methyl ketone and an acrylate or methacrylate monomer.
Claim 8
Dependent Claim
12 words
A medium according to claim 6 wherein the comonomer is ethyl acrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |