US4544584B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cultured onyx products and methods therefor
Assignee: SPECTRUM 21 LICENSING CORP
•
Filing: 1984-01-20
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Granted: 1998-06-30
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Expires: 2004-01-20
Abstract
No abstract record available.
Inventors
- 👤 Gilbert B Ross
- 👤 Theodore E Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:38
CPC Classifications
B; B44; B44F; B44F9/00; B44F9/04; C; C08; C08L; C08L67/00; C08L67/06
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) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |