US2563375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-aminoisophthaloylacetonitrile
Assignee: GAF Chemicals Corp
•
Filing: 1949-10-29
•
Granted: 1951-08-07
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Schenck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:40
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
5-AMINOISOPHTHALOYLACETONITRILE.
Claim 2
Dependent Claim
1 words
5-AMINOISOPHTHALOYLACETONITRILE.
References Cited (Backward Citations)
US1950421A
Cited
US2392167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |