Patent US3208990A successfully refreshed from Google Patents.
US3208990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-containing reactive azo chloropyrimidine dyestuffs
Assignee: Sandoz AG
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Filing: 1962-07-30
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Granted: 1965-09-28
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Benz Jakob
- 👤 Schweizer August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:10
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/012; C09B62/02; C09B62/20; C09B62/24; C09B62/255; C09B62/44; C09B62/465; C09B62/47; C09B62/477
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
4 words
DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |