US3530397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser element
Assignee: KDDI Corp
•
Filing: 1965-05-27
•
Granted: 1970-09-22
•
Expires: 1985-05-27
Abstract
No abstract record available.
Inventors
- 👤 Chuhei Suzuki
- 👤 Takao Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:32
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/0606; H01S3/09; H01S3/091; H01S3/0915; H01S3/092; H01S3/093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3087374A
Cited
US3225307A
Cited
US3230474A
Cited
US3372972A
Cited
US3354405A
Cited
US3196366A
Cited
US3297958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |