US4622409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(4-nitrophenyl)-2-(hydroxymethyl)-pyrrolidine and deuterated derivatives thereof
Assignee: Orange SA
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Filing: 1985-05-13
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Granted: 1986-11-11
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Expires: 2005-05-13
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
2026-11-03 07:57
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
18 words
A crystalline paranitroaniline derivative according to the following formula: ##STR5## and exhibiting high optoelectronic second order harmonic qualities.
Claim 2
Dependent Claim
18 words
A crystalline paranitroaniline derivative according to the following formula: ##STR5## and exhibiting high optoelectronic second order harmonic qualities.
Claim 3
Dependent Claim
31 words
A crystalline paranitroaniline derivative having the formula: ##STR6## in which at least one of the hydrogen atoms is a deuterated hydrogen atom, said derivative exhibiting high optoelectronic second order harmonic qualitites.
Claim 4
Dependent Claim
31 words
A crystalline paranitroaniline derivative having the formula: ##STR6## in which at least one of the hydrogen atoms is a deuterated hydrogen atom, said derivative exhibiting high optoelectronic second order harmonic qualitites.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |