US2866678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-amino-2-nitrobenzene-4-sulfonic acid amides
Assignee: Saul and Co
•
Filing: 1955-02-21
•
Granted: 1958-12-30
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Merian Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
C; C09; C09B; C09B51/00; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
9 words
A 1-AMINO-2-NITROBENZENE-4-SULFONIC ACID AMIDE WHICH CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
9 words
A 1-AMINO-2-NITROBENZENE-4-SULFONIC ACID AMIDE WHICH CORRESPONDS TO THE FORMULA
Claim 3
Dependent Claim
10 words
HYDROPHOBIC FIBERS DYED WITH A COMPOUND DEFINED IN CLAIM 1.
References Cited (Backward Citations)
DE669031C
Cited
US2221131A
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US2506224A
Cited
US2422029A
Cited
US2466011A
Cited
US2466010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |