US4747109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor laser array device
Assignee: Sharp Corp
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Filing: 1986-07-02
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Granted: 1988-05-24
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Expires: 2006-07-02
Abstract
Abstract The laser device has a plurality of parallel index-waveguides. The intermediate regions of the waveguides are at an angle of inclination from a line perpendicular to each of both facets of the laser device. The ends of the waveguides are oriented orthogonally to the facets of the laser device.
Inventors
- 👤 Mototaka Taneya
- 👤 Mitsuhiro Matsumoto
- 👤 Sadayoshi Matsui
- 👤 Seiki Yano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:43
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/10; H01S5/40; H01S5/4025; H01S5/4031
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
In a semiconductor laser array device comprising a plurality of index-waveguides in a parallel manner, said index-waveguides are at an angle of inclination from a line perpendicular to each of both facets of the laser array device, and both end portions of each of said index-waveguides are at right angles to the facets.
Claim 2
Dependent Claim
53 words
In a semiconductor laser array device comprising a plurality of index-waveguides in a parallel manner, said index-waveguides are at an angle of inclination from a line perpendicular to each of both facets of the laser array device, and both end portions of each of said index-waveguides are at right angles to the facets.
References Cited (Backward Citations)
EP0010949A2
Cited
JPS5793588A
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 |