Patent US5376581B1 successfully refreshed from Google Patents.
US5376581B1
Expired / Lapsed
US
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Fabrication of semiconductor laser elements
Assignee: Mitsubishi Chemical Corp
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Filing: 1993-09-10
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Granted: 1999-02-23
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Expires: 2013-09-10
Abstract
No abstract record available.
Inventors
- 👤 Kenji Shimoyama
- 👤 Yuichi Inoue
- 👤 Hideki Gotoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:03
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/20; H01S5/22; H01S5/223; H01S5/2231; H01S5/227; H01S5/2272; H01S5/40; H01S5/4025; H01S5/4031; Y; Y10; Y10S; Y10S148/00; Y10S148/095
Claims Analysis
Total Claims: 0
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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) | 2002-02-22 | 2002-08-24 | 2003-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-22 | 2006-08-24 | 2007-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-22 | 2010-08-24 | 2011-02-23 | $7700.00 | Window Closed / Lapsed |