US3064049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tri-hydroxy-naphthanilides
Assignee: GAF Chemicals Corp
•
Filing: 1959-12-23
•
Granted: 1962-11-13
•
Expires: 1979-12-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
7 words
A COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
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Cited
US2023591A
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US2025116A
Cited
US2410397A
Cited
US2635536A
Cited
US2754286A
Cited
DE917024C
Cited
GB818299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |