US3547790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic condensation products
Assignee: Hooker Chemical Corp
•
Filing: 1969-08-01
•
Granted: 1970-12-15
•
Expires: 1989-08-01
Abstract
No abstract record available.
Inventors
- 👤 Bobby F Dannels
- 👤 Alvin F Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:48
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3386899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |