US4258111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hologram and method of production thereof with photo-crosslinkable polymers
Assignee: Canon Inc
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Filing: 1979-05-29
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Granted: 1981-03-24
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Expires: 1999-05-29
Abstract
Abstract A hologram is produced by causing a crosslinking reaction in accordance with an interference pattern in a recording carrier composed of a polymer containing in its unit structure an aromatic or hereto cyclic ring having a reactive position capable of being substituted by radical.
Inventors
- 👤 Masakazu Matsumoto
- 👤 Katsuhiko Nishide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:15
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/0005; G03F7/001; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/117; Y10S430/126; Y10S430/128
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
72 words
A relatively thin volume type phase hologram produced by exposing a recording carrier to an interference pattern of radiant rays, said recording carrier consisting essentially of: (1) a polymer containing in its unit structure an aromatic or heterocyclic ring having therein a reactive position capable of being substituted by a radical, and; (2) a halogenic radical former wherein said polymer and said halogenic radical former are cross-linked responsive to said interference pattern.
Claim 2
Dependent Claim
72 words
A relatively thin volume type phase hologram produced by exposing a recording carrier to an interference pattern of radiant rays, said recording carrier consisting essentially of: (1) a polymer containing in its unit structure an aromatic or heterocyclic ring having therein a reactive position capable of being substituted by a radical, and; (2) a halogenic radical former wherein said polymer and said halogenic radical former are cross-linked responsive to said interference pattern.
Claim 3
Dependent Claim
15 words
A hologram as claimed in claim 1, wherein said aromatic ring is a benzene ring.
Claim 4
Dependent Claim
53 words
A hologram as claimed in claim 1, wherein said heterocyclic ring is selected from the group consisting of furan ring, thiophene ring, pyrrole ring, pyrollidone ring, oxazole ring, thiazole ring, imidazole ring, pyrazole ring, pyridine ring, pyrimidine ring, triazole ring, oxazine ring, triazine ring, pyrazine ring, tetrazole ring, thiazine ring and pyridazine ring.
Claim 5
Dependent Claim
15 words
A hologram as claimed in claim 1, wherein said aromatic ring is a carbazole ring.
References Cited (Backward Citations)
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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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |