Patent US1042356A successfully refreshed from Google Patents.
US1042356A
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US
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Disazo dyes and process of making them.
Assignee: CORPORATION OF CHEMISCHE FABRIK GRIESHEIM-ELEKTRON
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Filing: 1912-06-05
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Granted: 1912-10-22
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Expires: 1932-06-05
Abstract
No abstract record available.
Inventors
- 👤 August Leopold Laska
- 👤 Arthur Zitscher
- 👤 Felix Kunert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:44
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/10; C09B29/18; C09B29/20
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) | 1915-10-22 | 1916-04-22 | 1916-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-10-22 | 1920-04-22 | 1920-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-10-22 | 1924-04-22 | 1924-10-22 | $7700.00 | Window Closed / Lapsed |