Patent US2328682A successfully refreshed from Google Patents.
US2328682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing cellulose esters
Assignee: Individual
•
Filing: 1939-05-24
•
Granted: 1943-09-07
•
Expires: 1959-05-24
Abstract
No abstract record available.
Inventors
- 👤 Schnegg Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:32
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/40; D06P3/46; D06P3/48; D01; D01F; D01F2/00; D01F2/24; D01F2/28; D06P1/00; D06P1/44; D06P1/60; D06P1/613; D06P1/6131; D06P1/6133; D06P1/6136; D06P1/653; D06P1/6533; D06P1/673; D06P1/67333; D06P1/6735; D06P3/42; D06P3/461
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1946-09-06 | 1947-03-08 | 1947-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-06 | 1951-03-08 | 1951-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-06 | 1955-03-08 | 1955-09-07 | $7700.00 | Window Closed / Lapsed |