US4499255B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of epoxy resins
Assignee: Dow Chemical Co
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Filing: 1983-08-16
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Granted: 2000-01-11
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Expires: 2003-08-16
Abstract
No abstract record available.
Inventors
- 👤 Chun S Wang
- 👤 Ha Q Pham
- 👤 James L Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:27
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/10; C08G59/04; C08G59/06; C08G59/063
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) | 2003-01-10 | 2003-07-12 | 2004-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-10 | 2007-07-12 | 2008-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-10 | 2011-07-12 | 2012-01-11 | $7700.00 | Window Closed / Lapsed |