Patent US4909598A successfully refreshed from Google Patents.
US4909598A
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Non-linear optical device
Assignee: Konica Minolta Inc
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Filing: 1989-07-24
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Granted: 1990-03-20
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Expires: 2009-07-24
Abstract
Abstract A non-linear optical device applicable to use such as the generation of the higher harmonic waves and the parametric amplification of laser beam is disclosed. The device comprises a crystal of a compound represented by the following Formula I: ##STR1## wherein A is an electron attractive group having 0 to 5 carbon atoms; R 1 is a hydrogen atom, an alkyl group or an alkenyl group; R 2 is a hydroxyl group, an acylamino group or a ureido group; and R 3 is a hydrogen atom or a mono-valent substituent.
Inventors
- 👤 Hidetaka Ninomiya
- 👤 Miki Morita
- 👤 Yoshitaka Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:08
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A non-linear optical device comprising a crystal of a compound represented by the following Formula I: ##STR4## wherein A is an electron attractive group having 0 to 5 carbon atoms; R 1 is a hydrogen atom, an alkyl group or an alkenyl group; R 2 is a hydroxyl group, an acylamino group or a ureido group; and R 3 is a hydrogen atom or a mono-valent substituent.
Claim 2
Dependent Claim
67 words
A non-linear optical device comprising a crystal of a compound represented by the following Formula I: ##STR4## wherein A is an electron attractive group having 0 to 5 carbon atoms; R 1 is a hydrogen atom, an alkyl group or an alkenyl group; R 2 is a hydroxyl group, an acylamino group or a ureido group; and R 3 is a hydrogen atom or a mono-valent substituent.
Claim 3
Dependent Claim
21 words
The device of claim 1, wherein said A is a group having a Hammet's σρ value of not less than zero.
Claim 4
Dependent Claim
40 words
The device of claim 2, wherein said A is a nitro group, a cyano group, a formyl group, a halogen atom, an alkylsulfonyl group, an alkoxycarbonyl group, a trifluoromethyl group, a dicyanovinyl group, a succinimido group or a heterocyclic group.
Claim 5
Dependent Claim
22 words
The device of claim 3, wherein said A is a nitro group, a cyano group, a formyl group or an alkylsulfonyl group.
Claim 6
Dependent Claim
12 words
The device of claim 1, wherein said device has a waveguide form.
Claim 7
Dependent Claim
12 words
The device of claim 5, wherein said device has a fibre form.
Claim 8
Dependent Claim
12 words
The device of claim 5, wherein said device has a tabular form.
Claim 9
Dependent Claim
25 words
The device of claim 5, wherein said device has a form in which a single crystal of said compound is surrounded by a cladding material.
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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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |