US3047582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalocyanine-sulfonamides and-carbonamides
Assignee: Bayer AG
•
Filing: 1960-07-15
•
Granted: 1962-07-31
•
Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Bienert Hildegard
- 👤 Prochaska Dorothea Hildegard
- 👤 Bienert Berthold Klaus
- 👤 Breig Kurt
- 👤 Gutjahr Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:55
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A PHTHALOCYANINE DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
6 words
A PHTHALOCYANINE DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
US2873280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |