Patent US1606624A successfully refreshed from Google Patents.
US1606624A
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Manufacture of a symmetrical ureide of meta-aminobenzoyl-meta-aminomethylbenzoyl-1-naphthylamino-4-6-8-trisulphonate of sodium
Assignee: POULENC FERES ETS
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Filing: 1923-12-26
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Granted: 1926-11-09
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Expires: 1943-12-26
Abstract
No abstract record available.
Inventors
- 👤 Fourneau Ernest
- 👤 Trefouel Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:40
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/45; C07C309/51
Claims Analysis
Total Claims: 0
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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) | 1929-11-08 | 1930-05-10 | 1930-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-08 | 1934-05-10 | 1934-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-08 | 1938-05-10 | 1938-11-09 | $7700.00 | Window Closed / Lapsed |