Patent EP0035894A1 successfully refreshed from Google Patents.
US4746199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-linear optic process using N-(4-nitrophenyl)-2-(hydroxymethyl)-pyrrolidine and deuterated derivatives thereof
Assignee: Orange SA
•
Filing: 1986-07-08
•
Granted: 1988-05-24
•
Expires: 2006-07-08
Abstract
Abstract The invention relates to novel paranitroaniline derivatives usable in non-linear optics and electrooptics, as well as to the preparation process for the same. These derivatives are in accordance with formula (I): ##STR1## in which one or more of the hydrogen atoms are optionally replaced by deuterium atoms. They are prepared by reacting one of the two pure optical isomers of 2-(hydroxymethyl)-pyrrolidine with a parahalogenonitrobenzene. The optically pure derivatives can be used in optical or optoelectronic devices.
Inventors
- 👤 Jean-Francois Nicoud
- 👤 Joseph Zyss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:19
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/08; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611; G02F1/3612
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
In a process comprising the application of an organic compound to non-linear optics, the step of introducing, as the essential active component, in optoelectronic devices, an optically pure paranitroaniline derivative of the formula ##STR6## and exhibiting high optoelectronic second order harmonic qualities.
Claim 2
Dependent Claim
42 words
In a process comprising the application of an organic compound to non-linear optics, the step of introducing, as the essential active component, in optoelectronic devices, an optically pure paranitroaniline derivative of the formula ##STR6## and exhibiting high optoelectronic second order harmonic qualities.
Claim 3
Dependent Claim
56 words
In a process comprising the application of an organic compound to non-linear optics, the step of introducing as the essential active component in optoelectronic devices, a crystalline paranitroaniline derivative having the formula ##STR7## in which at least one of the hydrogen atoms in a deuterated hydrogen atom, said derivative exhibiting high optoelectronic second order harmonic qualities.
Claim 4
Dependent Claim
56 words
In a process comprising the application of an organic compound to non-linear optics, the step of introducing as the essential active component in optoelectronic devices, a crystalline paranitroaniline derivative having the formula ##STR7## in which at least one of the hydrogen atoms in a deuterated hydrogen atom, said derivative exhibiting high optoelectronic second order harmonic qualities.
References Cited (Backward Citations)
US3194963A
Cited
US3314795A
Cited
FR1368199A
Cited
US4012232A
Cited
US4367170A
Cited
US4622409A
Cited
US4440672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |