US2897207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New phthalocyanine dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1958-03-10
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Granted: 1959-07-28
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Zickendraht Christian
- 👤 Koller Eugen Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:48
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
ACETONE-SOLUBLE COPPER PHTHALOCYANINE TETRASULFONIC ACID AMIDE, EACH AMIDE NITROGEN ATOM OF WHICH BEARS AN ALKOXYALKYL GROUP OF AT LEAST 3 AND AT MOST 5 CARBON ATOMS.
Claim 2
Dependent Claim
26 words
ACETONE-SOLUBLE COPPER PHTHALOCYANINE TETRASULFONIC ACID AMIDE, EACH AMIDE NITROGEN ATOM OF WHICH BEARS AN ALKOXYALKYL GROUP OF AT LEAST 3 AND AT MOST 5 CARBON ATOMS.
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) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |