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Patent US3521187A successfully refreshed from Google Patents.
US3521187A
Expired / Lapsed
US
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Laser media containing coumarin dye solutions
Assignee: Eastman Kodak Co
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Filing: 1967-09-18
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Granted: 1970-07-21
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Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Snavely
- 👤 Otis G Peterson
- 👤 Raymond E Reithel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:48
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/20; H01S3/213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3383071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |