US3864130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated optical circuits
Assignee: Bayer AG
•
Filing: 1973-11-19
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Granted: 1975-02-04
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Expires: 1993-11-19
Abstract
Abstract In a process for the production of integrated optical circuits in particular waveguides, radiation-sensitive material is exposed to electromagnetic surface waves. The refractive index of the exposed layer may be changed by physical or chemical processing which is carried out either during or after exposure. Preferably the surface waves are produced by total reflection.
Inventors
- 👤 Heinrich Nassenstein
- 👤 Jurgen Geldmacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:11
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/32; G02B6/00; G02B6/10; G02B6/12; G02B6/122; G02B6/124; G02B6/13; G03; G03C; G03C1/00; G03C1/66; G03C5/00; G03C5/26; G03C5/40; G03F; G03F7/00; G03F7/0005; G03F7/001
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
27 words
A process according to claim 1, wherein the refractive index gradient is produced by physical or chemical processing which is carried out either during or after exposure.
Claim 2
Dependent Claim
15 words
A process according to claim 1, wherein the surface waves are produced by total reflection.
Claim 3
Dependent Claim
15 words
A process according to claim 1, wherein a photopolymer is used as the radiation-sensitive material.
Claim 4
Dependent Claim
14 words
A process according to claim 1, wherein photochrome is used as the radiation-sensitive material.
Claim 5
Dependent Claim
14 words
A process according to claim 1, wherein chromate-gelatin is used as the radiation-sensitive material.
Claim 6
Dependent Claim
35 words
A process according to claim 1, wherein a homogeneous wave is superimposed upon the surface wave in a component section of the radiation-sensitive material so that an interference structure is formed in the component section.
Claim 7
Dependent Claim
37 words
A process according to claim 1, wherein a second surface wave is superimposed upon the first surface wave in a component section of the radiation-sensitive material so that an interference structure is formed in the component section.
Claim 8
Dependent Claim
30 words
A process according to claim 2, wherein the radiation sensitive material is a photographic silver halide emulsion in which a phase structure is produced, a photopolymer, a photochrome, or chromate-gelatin.
Claim 9
Dependent Claim
31 words
A process according to claim 3, wherein the radiation sensitive material is a photographic silver halide emulsion in which a phase structure is produced, a photopolymer, a photochrome, or chromate gelatin.
Claim 10
Dependent Claim
31 words
A process according to claim 7, wherein the radiation sensitive material is a photographic silver halide emulsion in which a phase structure is produced, a photopolymer, a photochrome, or chromate gelatin.
Claim 11
Dependent Claim
31 words
A process according to claim 8, wherein the radiation sensitive material is a photographic silver halide emulsion in which a phase sturcture is produced, a photopolymer, a photochrome, or chromate gelatin.
Claim 12
Dependent Claim
33 words
A process according to claim 1, wherein the radiation sensitive material is a photographic silver halide emulsion layer which is after exposure to the exponentially decaying surface wave converted into a phase structure.
Claim 13
Dependent Claim
33 words
A process according to claim 2, wherein the radiation sensitive material is a photographic silver halide emulsion layer which is after exposure to the exponentially decaying surface wave converted into a phase structure.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |