US2219280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyestuffs and process of making same
Assignee: FIRM SOCIETY OF CHEMICAL INDUSTRY IN BASLE
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Filing: 1939-05-26
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Granted: 1940-10-29
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Expires: 1959-05-26
Abstract
No abstract record available.
Inventors
- 👤 Graenacher Charles
- 👤 Sallmann Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:25
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/001; C09B44/00; C09B44/02; C09B51/00; C09B62/00; C09B62/44; C09B62/465; D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/322; D06M13/46; D06P; D06P1/00; D06P1/02; D06P1/12; D06P1/125; D06P1/44; D06P1/655; D06P1/66; D06P5/00; D06P5/22; D06P5/225
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) | 1943-10-29 | 1944-04-29 | 1944-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-29 | 1948-04-29 | 1948-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-29 | 1952-04-29 | 1952-10-29 | $7700.00 | Window Closed / Lapsed |