Patent US3060189A successfully refreshed from Google Patents.
US3060189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of mixtures of alkali phthalocyanines and metalfree phthalocyanine
Assignee: Novartis AG
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Filing: 1961-10-13
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Granted: 1962-10-23
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Expires: 1981-10-13
Abstract
No abstract record available.
Inventors
- 👤 Stocker Emil
- 👤 Pugin Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:46
CPC Classifications
C; C09; C09B; C09B47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS FOR THE PRODUCTION OF MIXTURES OF ALKALI PHATHALOCYANINES AND MATEL-FREE PHALOCYANINE COMPRISING REACTING PHTHALONITRILE WITH ANHYDROUS ALKALI SULPHIDES OF THE FORMULA A2SN WHEREIN A IS AN ALKALI METAL AND N IS A POSITIVE WHOLE NUMBER OF FROM 1 TO 4 INCLUCIVE, AT A TEMPERATURE BETWEEN 100 AND 300* C.
Claim 2
Dependent Claim
50 words
PROCESS FOR THE PRODUCTION OF MIXTURES OF ALKALI PHATHALOCYANINES AND MATEL-FREE PHALOCYANINE COMPRISING REACTING PHTHALONITRILE WITH ANHYDROUS ALKALI SULPHIDES OF THE FORMULA A2SN WHEREIN A IS AN ALKALI METAL AND N IS A POSITIVE WHOLE NUMBER OF FROM 1 TO 4 INCLUCIVE, AT A TEMPERATURE BETWEEN 100 AND 300* C.
References Cited (Backward Citations)
US2124419A
Cited
US2699441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |