US3248379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber reactive dyestuffs and process for their preparation
Assignee: GAF Chemicals Corp
•
Filing: 1962-11-21
•
Granted: 1966-04-26
•
Expires: 1982-11-21
Abstract
No abstract record available.
Inventors
- 👤 Lester N Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:59
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A WATER SOLUBLE CHROMOPHORIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
8 words
A WATER SOLUBLE CHROMOPHORIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US1886480A
Cited
DE696589C
Cited
US2332047A
Cited
US2350188A
Cited
US2339739A
Cited
US2634263A
Cited
US2623871A
Cited
US2829142A
Cited
US2973351A
Cited
US2906748A
Cited
US2904543A
Cited
GB842802A
Cited
US3045005A
Cited
US3072454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |