US3845032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylbenzoateazohydroxynaphtharylide dyestuffs
Assignee: GAF Corp
•
Filing: 1972-03-22
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Granted: 1974-10-29
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Expires: 1992-03-22
Abstract
Abstract 1. A COMPOUND OF THE FOLLOWING FORMULA: 1-(2-Y,4,5-DI(X-)-PHENYL-N=N-),2-(HO-),3-(2,3,4,5- TETRA(R1)-PHENYL-NH-CO-)-NAPHTHALENE WHEREIN ONE X IS H AND THE OTHER X IS -COOR WHEREIN R IS C2-8 ALKYL, Y IS H OR C1-2 ALKYL, AND R1 IS INDEPENDENTLY H, C1-2 ALKYL OR C1-4 ALKOXY BUT WHEREIN NOT MORE THAN TWO R1''S ARE ALKYL OR ALKOXY.
Inventors
- 👤 W Armento
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:35
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/10; C09B29/18; C09B29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE FOLLOWING FORMULA:
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |