US3109841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleach-fast, fiber-reactive orange to red diazo dyes
Assignee: EIDP Inc
•
Filing: 1959-07-31
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Granted: 1963-11-05
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Expires: 1979-07-31
Abstract
No abstract record available.
Inventors
- 👤 Gumprecht William Henry
- 👤 Reif Donald John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:55
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B35/00; C09B35/02; C09B35/039; C09B35/04; C09B39/00; C09B43/00; C09B43/12; C09B43/124; C09B43/1245; C09B62/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US921105A
Cited
US2860128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |